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2024年05月11日
英語 長文読解に挑戦しよう【第５回】
では、前回の続きから始めたいと思います。
↓ 以下の長文は分かりやすくするため、つながっている部分は１文ごとに改行、段落は２個分改行を行います。
問
Native American and Canadian Indian tribes have passed down stories going back thousands of years about giant ape-men, or Bigfoot, living in the forest of the western United States and Canada.
They called these creature Sasquatch, Yerin, or Mountain Devils.
Regardless of the name, the descriptions of these animals are usually the same.
The Bigfoot is usually described as being very tall, well over two meters.
It is covered in thick, dark hair and usually gives off a bad odor.
The Bigfoot's body is usually very muscular and ape-like, yet it walks upright and has a face more similar to that of humans than of apes.
For the most part, these creatures appear not to be violent or aggressive.
Big foot sightings are usually of lone, or single, creatures, but there have been reports of people seeing groups, or families, of Bigfoot.
People in other countries also tell stories of similar ape-men.
In the Himalayas, a mountain range in Nepal, people call these creatures Yeti, or Abominable Snowmen.
The Africans call them Ngoloko, and the Chinese tell stories of Gin-sung, or Bearman.
Though sightings have been reported for centuries, is there any scientific evidence for the existence of these creatures?
Some say yes, and others say no.
Dr. Grover Krantz, a physical anthropologist at the University of Oregon, believes that Bigfoot may be a type of creature known as a Gigantopithecus.
A Gigantopithecus is an animal that lived in Asia over 300,000 years ago and looked like a mix between an ape and a very large man.
Dr. Krantz believes that these animals, which lived long before humans, may have migrated from Asia and decided to settle in the heavily wooded area of the Pacific Northwest, where food was plentiful.
Is it possible that creatures like these could have survived for so many years unknown to humans?
Cryptozoologists compare the case of Bigfoot to that of the coelacanth.
The coelacanth is a type of fish that was believed to have gone extinct over 70 million years ago, but this fish has been discovered to be still living off the coast of South Africa.
Cryptozoologists believe that the animals that we now call Bigfoot have been able to survive by living in an area that people, until recently, have seldom gone.
There are, however, some questions that science has been unable to answer.
For example, why have no dead Bigfoot bodies ever been discovered?
And where is the physical proof of their existence?
Bigfoot researchers point out that it is unusual to find the dead remains of any animal in the forest.
Most of the time, they say, other animals eat the remains soon after death; this may be the case for Bigfoot, too.
Many skeptics, people who do not believe in Bigfoot, say that the videos and photographs of Bigfoot are really pictures of people wearing ape costumes.
They also believe that the Bigfoot footprints are really the footprints of bears, or footprints made by tricksters trying to fool scientists.
It is possible that we may never know the truth about these animals.
If they have avoided being seen for the last several thousand years, then maybe they will stay hidden for another several thousand.
Or it may be that as we humans go deeper and deeper into the forest of Northwest America and Canada, we may finally come face to face with the elusive Bigfoot.
続きの問題から解いていきましょう
［３］ The Bigfoot has been compared to the coelacanth because
①they are both believed to have gone extinct because humans invaded their habitats.
②the coelacanth is an animal that has survived in areas populated by humans and other animals.
③the coelacanth is an exemple of a creature that has survived for a long time without being discovered by humans.
④the Bigfoot was to some recently spotted off the coast of South Africa where the coelacanth was first discovered.
Bigfoot と coelacanth の比較については、絶滅したと思われていた種でありながらも、長期間の生存が確認されたという部分でしょう。
そのため、答えは③です。
［４］According to some researchers, one possible reason why we have no physical proof of Bigfoot's existence is because
①other animals could have consumed dead Bigfoot bodies, making them disappear.
②the dead remains of animals are usually found in places where humans don’t explore.
③the people who have found physical proof have kept it to themselves for their own benefit.
④the bodies and footprints of Bigfoot have been often mistaken for those of bears.
Bigfootが存在する証拠についての文章ですが、この中では、「Most of the time, they say, other animals eat） the remains soon after death; this may be the case for Bigfoot, too」の部分あたりですね。
答えは①となります。
［５］ The author implies that
①the Bigfoot should remain a mystery as it has been for the past several thousand years.
②we should not try to find out the truth about the Bigfoot as it would only result in conflict.
③we cannot say if the Bigfoot is real or not because there is not enough evidence to support either side.
④seeking the truth about the Bigfoot will lead us to take better care of our environment.
最後の設問は、この文章は何が言いたい文章だったのかというものですが、
「It is possible that we may never know the truth about these animals.」
が総括していっている部分になりますね。
というわけで、答えは③です。
今回は、新しい長文読解もやるため、1度に2度更新いたします。
どうぞよろしくお願いいたします。
↓ おすすめの参考書は載せておきますが、まずは自分のレベルに合った参考書を選びましょう。参考書の選び方はまた別の機会（サブブログ）でやろうと思います
↓ 以下の長文は分かりやすくするため、つながっている部分は１文ごとに改行、段落は２個分改行を行います。
問
Native American and Canadian Indian tribes have passed down stories going back thousands of years about giant ape-men, or Bigfoot, living in the forest of the western United States and Canada.
They called these creature Sasquatch, Yerin, or Mountain Devils.
Regardless of the name, the descriptions of these animals are usually the same.
The Bigfoot is usually described as being very tall, well over two meters.
It is covered in thick, dark hair and usually gives off a bad odor.
The Bigfoot's body is usually very muscular and ape-like, yet it walks upright and has a face more similar to that of humans than of apes.
For the most part, these creatures appear not to be violent or aggressive.
Big foot sightings are usually of lone, or single, creatures, but there have been reports of people seeing groups, or families, of Bigfoot.
People in other countries also tell stories of similar ape-men.
In the Himalayas, a mountain range in Nepal, people call these creatures Yeti, or Abominable Snowmen.
The Africans call them Ngoloko, and the Chinese tell stories of Gin-sung, or Bearman.
Though sightings have been reported for centuries, is there any scientific evidence for the existence of these creatures?
Some say yes, and others say no.
Dr. Grover Krantz, a physical anthropologist at the University of Oregon, believes that Bigfoot may be a type of creature known as a Gigantopithecus.
A Gigantopithecus is an animal that lived in Asia over 300,000 years ago and looked like a mix between an ape and a very large man.
Dr. Krantz believes that these animals, which lived long before humans, may have migrated from Asia and decided to settle in the heavily wooded area of the Pacific Northwest, where food was plentiful.
Is it possible that creatures like these could have survived for so many years unknown to humans?
Cryptozoologists compare the case of Bigfoot to that of the coelacanth.
The coelacanth is a type of fish that was believed to have gone extinct over 70 million years ago, but this fish has been discovered to be still living off the coast of South Africa.
Cryptozoologists believe that the animals that we now call Bigfoot have been able to survive by living in an area that people, until recently, have seldom gone.
There are, however, some questions that science has been unable to answer.
For example, why have no dead Bigfoot bodies ever been discovered?
And where is the physical proof of their existence?
Bigfoot researchers point out that it is unusual to find the dead remains of any animal in the forest.
Most of the time, they say, other animals eat the remains soon after death; this may be the case for Bigfoot, too.
Many skeptics, people who do not believe in Bigfoot, say that the videos and photographs of Bigfoot are really pictures of people wearing ape costumes.
They also believe that the Bigfoot footprints are really the footprints of bears, or footprints made by tricksters trying to fool scientists.
It is possible that we may never know the truth about these animals.
If they have avoided being seen for the last several thousand years, then maybe they will stay hidden for another several thousand.
Or it may be that as we humans go deeper and deeper into the forest of Northwest America and Canada, we may finally come face to face with the elusive Bigfoot.
続きの問題から解いていきましょう
［３］ The Bigfoot has been compared to the coelacanth because
①they are both believed to have gone extinct because humans invaded their habitats.
②the coelacanth is an animal that has survived in areas populated by humans and other animals.
③the coelacanth is an exemple of a creature that has survived for a long time without being discovered by humans.
④the Bigfoot was to some recently spotted off the coast of South Africa where the coelacanth was first discovered.
Bigfoot と coelacanth の比較については、絶滅したと思われていた種でありながらも、長期間の生存が確認されたという部分でしょう。
そのため、答えは③です。
［４］According to some researchers, one possible reason why we have no physical proof of Bigfoot's existence is because
①other animals could have consumed dead Bigfoot bodies, making them disappear.
②the dead remains of animals are usually found in places where humans don’t explore.
③the people who have found physical proof have kept it to themselves for their own benefit.
④the bodies and footprints of Bigfoot have been often mistaken for those of bears.
Bigfootが存在する証拠についての文章ですが、この中では、「Most of the time, they say, other animals eat） the remains soon after death; this may be the case for Bigfoot, too」の部分あたりですね。
答えは①となります。
［５］ The author implies that
①the Bigfoot should remain a mystery as it has been for the past several thousand years.
②we should not try to find out the truth about the Bigfoot as it would only result in conflict.
③we cannot say if the Bigfoot is real or not because there is not enough evidence to support either side.
④seeking the truth about the Bigfoot will lead us to take better care of our environment.
最後の設問は、この文章は何が言いたい文章だったのかというものですが、
「It is possible that we may never know the truth about these animals.」
が総括していっている部分になりますね。
というわけで、答えは③です。
今回は、新しい長文読解もやるため、1度に2度更新いたします。
どうぞよろしくお願いいたします。
↓ おすすめの参考書は載せておきますが、まずは自分のレベルに合った参考書を選びましょう。参考書の選び方はまた別の機会（サブブログ）でやろうと思います
 | 2023年受験用 全国大学入試問題正解 英語（私立大編） [ 旺文社 ] 価格:7260円 |
英語 長文読解に挑戦しよう【第６回】
今日からまた違う英長文について扱っていきたいと思います。
前に扱わせていただいた大学とは違うところになりますので、難易度も違ってきますが、どうぞよろしくお願いいたします。
↓ 以下の長文は分かりやすくするため、つながっている部分は１文ごとに改行、段落は２個分改行を行います。
問
If you've ever pondered whether your pet cat gives a whisker about your whereabouts, research may have an answer: cats seem you track their owners while they move about the house, and they are surprised if they appear somewhere they are not expecting them.
The finding supports the idea that cats retain a mental representation of their owners, even when they can't see them; a crucial bridge to higher mental processes such as forward planning and imagination.
Cats are notoriously ( ) creatures.
Although previous research has suggested that cats will search in the correct place if food is seen to disappear and expect to see their owner's face if they hear their voice, it was unclear how this ability translated into real life.
"It is also said that cats are not as interested in their owners as dogs are, but we had doubts about this point", said Dr Saho Takagi at the University of Kyoto in Japan.
To investigate, Takagi and colleagues recorded what happened when fifty domestic cats were individually shut inside a room, and repeatedly heard their owner calling their name from outside, followed by either a stranger's voice, or that of their owner, coming through a speaker on the opposite side of the room they were inhabiting.
Eight human observers watched these recordings and ranked the cat's level of surprise based on their ear and head movements.
Only when their owner's voice suddenly "appeared" inside the room - implying that they had somehow teleported there - did the cats appear confused.
"Thies study shows that cats can mentally map their location based ( C ) their owner's voice", said Takagi, whose research was published in the journal PLOS One.
"It suggests that cats have the ability to picture ( D ) in their minds.
Cats may have a more ( E ) before."
However, it's not entirely surprising that cats possess this ability: "That awareness of movement is critical to a cat's survival", said Roger Tabor, a biologist, author and presenter of the BBC TV series Cats.
"A lot of what a cat has to interpret in its territory is an awareness of where other cats are.
It is also important for hunting: how could a cat catch a field mouse moving around beneath the grass if it couldn't use clues, such as the occasional rustle, to see in its mind's eye, where they are?
A cat's owner is extremely significant in its life as a source of food and security, so where we are is very important."
Anika Kelsey, an expert studying cat's behaviour and author Let's Talk About Cats, said: "Cats have a close relationship with us and most feel settled and safe within our ( F ) so our human voice would be part of that bond or relationship.
When I am dealing ( G ) cats that suffer separation anxiety, I usually do not recommend playing the recording of the owner's voice in the home as this can cause anxiety with the cat hearing the voice, but not knowing where their human is."
Curiously, the cats did not show the same surprise response shen the owners' voice were replaced with cat meows or electronic sounds.
Possibly, this is because adult cats do not tend to use voice as their primary means of communication with one another, many may rely on other cues such as scent instead.
"The 'meow' that we used in this study is a voice signal that is only emitted ( I ) humans, except among kittens", said Takagi.
"Cats may not be able to identify other cats from their meows."
設問については後日、長文の解説が終わった後にするとして、まずは長文を解説していきます。
第１段落
［≪If≫ you（＝S）'ve ever pondered（＝V）
［≪whether≫ your pet cat（＝S） gives（＝V） a whisker（＝O）
［about your whereabouts］（＝「a whisker」の補足）］（＝O）,
research（＝S） may have（＝V） an answer（＝O）:
cats（＝S） seem（＝V） ［(that) you（＝S） track（＝V） their owners（＝O）
［≪while≫ they（＝their owners） move（＝V） about the house］（＝「their ownersを補足）］（＝C）
, ≪and≫
they（＝S＝cats） are surprised（＝V） ［≪if≫ they（＝S） appear（＝V）
［≪somewhere≫ they（＝S） are not expecting（＝V） them（＝O）］（＝「appear」の補足）］（＝O）.
※「ponder」：熟考する、思案する／「whether」：～かどうか／「whereabout」：居場所、行方
大学が変わったためか、初っ端から結構な長めな文ですね…
かなりの数の接続詞が使われていたりしますが、上のように分解していくとだいぶ読みやすいのではないかと思います。
訳としては、
もし、あなたのペットの猫があなたの行方を気にしているかどうか考えたことがあるなら、研究が答えを提供しているかもしれません。猫は飼い主が家の中を移動する際に彼らを追跡しているようであり、彼らが予期しない場所に現れると驚いているようです。
となります。
第２段落
The finding（＝S） supports（＝V） the idea（＝O）
［≪that≫ cats（＝S） retain（＝V） a mental representation（＝O） ［of their owners］］（＝ideaの内容）,
even ［≪when≫ they（＝S） can't see（＝V） them（＝O）］;
a crucial bridge（＝S） ［to higher mental］（＝「a crucial bridge」を修飾） processes（＝V）
≪such as forward≫ planning（＝O①） ≪and≫ imagination（＝O②）.
今回は第２段落までとしますが、文章が長くなるとやはり文章の構成が色々混ざりあって解読が難しくなりますね。
訳：
その結果は、猫が飼い主の精神的な表象を保持しているという考えを支持しています。それは、彼らが飼い主を見えなくても想像力や将来の計画などの高次の精神的プロセスにつながる重要な架け橋です。
次回はこの続きを扱っていきたいと思います。
↓ おすすめの参考書は載せておきますが、まずは自分のレベルに合った参考書を選びましょう。参考書の選び方はまた別の機会（サブブログ）でやろうと思います
前に扱わせていただいた大学とは違うところになりますので、難易度も違ってきますが、どうぞよろしくお願いいたします。
↓ 以下の長文は分かりやすくするため、つながっている部分は１文ごとに改行、段落は２個分改行を行います。
問
If you've ever pondered whether your pet cat gives a whisker about your whereabouts, research may have an answer: cats seem you track their owners while they move about the house, and they are surprised if they appear somewhere they are not expecting them.
The finding supports the idea that cats retain a mental representation of their owners, even when they can't see them; a crucial bridge to higher mental processes such as forward planning and imagination.
Cats are notoriously ( ) creatures.
Although previous research has suggested that cats will search in the correct place if food is seen to disappear and expect to see their owner's face if they hear their voice, it was unclear how this ability translated into real life.
"It is also said that cats are not as interested in their owners as dogs are, but we had doubts about this point", said Dr Saho Takagi at the University of Kyoto in Japan.
To investigate, Takagi and colleagues recorded what happened when fifty domestic cats were individually shut inside a room, and repeatedly heard their owner calling their name from outside, followed by either a stranger's voice, or that of their owner, coming through a speaker on the opposite side of the room they were inhabiting.
Eight human observers watched these recordings and ranked the cat's level of surprise based on their ear and head movements.
Only when their owner's voice suddenly "appeared" inside the room - implying that they had somehow teleported there - did the cats appear confused.
"Thies study shows that cats can mentally map their location based ( C ) their owner's voice", said Takagi, whose research was published in the journal PLOS One.
"It suggests that cats have the ability to picture ( D ) in their minds.
Cats may have a more ( E ) before."
However, it's not entirely surprising that cats possess this ability: "That awareness of movement is critical to a cat's survival", said Roger Tabor, a biologist, author and presenter of the BBC TV series Cats.
"A lot of what a cat has to interpret in its territory is an awareness of where other cats are.
It is also important for hunting: how could a cat catch a field mouse moving around beneath the grass if it couldn't use clues, such as the occasional rustle, to see in its mind's eye, where they are?
A cat's owner is extremely significant in its life as a source of food and security, so where we are is very important."
Anika Kelsey, an expert studying cat's behaviour and author Let's Talk About Cats, said: "Cats have a close relationship with us and most feel settled and safe within our ( F ) so our human voice would be part of that bond or relationship.
When I am dealing ( G ) cats that suffer separation anxiety, I usually do not recommend playing the recording of the owner's voice in the home as this can cause anxiety with the cat hearing the voice, but not knowing where their human is."
Curiously, the cats did not show the same surprise response shen the owners' voice were replaced with cat meows or electronic sounds.
Possibly, this is because adult cats do not tend to use voice as their primary means of communication with one another, many may rely on other cues such as scent instead.
"The 'meow' that we used in this study is a voice signal that is only emitted ( I ) humans, except among kittens", said Takagi.
"Cats may not be able to identify other cats from their meows."
設問については後日、長文の解説が終わった後にするとして、まずは長文を解説していきます。
第１段落
［≪If≫ you（＝S）'ve ever pondered（＝V）
［≪whether≫ your pet cat（＝S） gives（＝V） a whisker（＝O）
［about your whereabouts］（＝「a whisker」の補足）］（＝O）,
research（＝S） may have（＝V） an answer（＝O）:
cats（＝S） seem（＝V） ［(that) you（＝S） track（＝V） their owners（＝O）
［≪while≫ they（＝their owners） move（＝V） about the house］（＝「their ownersを補足）］（＝C）
, ≪and≫
they（＝S＝cats） are surprised（＝V） ［≪if≫ they（＝S） appear（＝V）
［≪somewhere≫ they（＝S） are not expecting（＝V） them（＝O）］（＝「appear」の補足）］（＝O）.
※「ponder」：熟考する、思案する／「whether」：～かどうか／「whereabout」：居場所、行方
大学が変わったためか、初っ端から結構な長めな文ですね…
かなりの数の接続詞が使われていたりしますが、上のように分解していくとだいぶ読みやすいのではないかと思います。
訳としては、
もし、あなたのペットの猫があなたの行方を気にしているかどうか考えたことがあるなら、研究が答えを提供しているかもしれません。猫は飼い主が家の中を移動する際に彼らを追跡しているようであり、彼らが予期しない場所に現れると驚いているようです。
となります。
第２段落
The finding（＝S） supports（＝V） the idea（＝O）
［≪that≫ cats（＝S） retain（＝V） a mental representation（＝O） ［of their owners］］（＝ideaの内容）,
even ［≪when≫ they（＝S） can't see（＝V） them（＝O）］;
a crucial bridge（＝S） ［to higher mental］（＝「a crucial bridge」を修飾） processes（＝V）
≪such as forward≫ planning（＝O①） ≪and≫ imagination（＝O②）.
今回は第２段落までとしますが、文章が長くなるとやはり文章の構成が色々混ざりあって解読が難しくなりますね。
訳：
その結果は、猫が飼い主の精神的な表象を保持しているという考えを支持しています。それは、彼らが飼い主を見えなくても想像力や将来の計画などの高次の精神的プロセスにつながる重要な架け橋です。
次回はこの続きを扱っていきたいと思います。
↓ おすすめの参考書は載せておきますが、まずは自分のレベルに合った参考書を選びましょう。参考書の選び方はまた別の機会（サブブログ）でやろうと思います
| 2023年受験用 全国大学入試問題正解 英語（私立大編） [ 旺文社 ] 価格:7260円 |
英語 文法について【第２０回】
GWも終わり、通常どおりの日常に戻って初めての週末ですね。
まだ５月も始まったばかりです。
勉強だと、確実に基礎を固める時期と思いますので、地味ですが頑張っていきましょう。
では、本日の問題です。
問18 What my teacher says is usually simple, explict, and （ ）.
選択肢は、①to the good ②to the limit ③to the minute ④to the pointです。
では、見ていきましょう。
［What（＝O） my teacher（＝S） says（＝V）］（＝S） is（＝V） usually simple（C）, explict（＝C）, and （ ）（＝C）.
訳：私の先生が言うことは、簡潔で、明確で、（ ）だ。
となります。
（）の前にある「and」は「simple」「explict」と（）を並列しているもので、すべてが「What my teacher says」と＝になる（第２文型SVC、Ｓ＝Ｃといった意味になるため）ものです。
では、選択肢をみてみましょう。
①to the good：効果を上げて、有利に ②to the limit：限界まで
③to the minute：その時間に ④to the point：適切な、要を得た
となります。
さて、選択肢の意味を考えて、ここは答えが④となります。
ここまで連続して慣用句でしたので、次から違う問題がくればいいなぁ…
↓ 以下のような参考書も使いつつ、英文法や英語の問題への慣れを磨いていきましょう！
では、次回以降もよろしくお願いいたします。
まだ５月も始まったばかりです。
勉強だと、確実に基礎を固める時期と思いますので、地味ですが頑張っていきましょう。
では、本日の問題です。
問18 What my teacher says is usually simple, explict, and （ ）.
選択肢は、①to the good ②to the limit ③to the minute ④to the pointです。
では、見ていきましょう。
［What（＝O） my teacher（＝S） says（＝V）］（＝S） is（＝V） usually simple（C）, explict（＝C）, and （ ）（＝C）.
訳：私の先生が言うことは、簡潔で、明確で、（ ）だ。
となります。
（）の前にある「and」は「simple」「explict」と（）を並列しているもので、すべてが「What my teacher says」と＝になる（第２文型SVC、Ｓ＝Ｃといった意味になるため）ものです。
では、選択肢をみてみましょう。
①to the good：効果を上げて、有利に ②to the limit：限界まで
③to the minute：その時間に ④to the point：適切な、要を得た
となります。
さて、選択肢の意味を考えて、ここは答えが④となります。
ここまで連続して慣用句でしたので、次から違う問題がくればいいなぁ…
↓ 以下のような参考書も使いつつ、英文法や英語の問題への慣れを磨いていきましょう！
| 2023年受験用 全国大学入試問題正解 英語（私立大編） [ 旺文社 ] 価格:7260円 |
 | 2023年受験用 全国大学入試問題正解 英語（追加掲載編） [ 旺文社 ] 価格:4400円 |
 | 価格:1210円 |
では、次回以降もよろしくお願いいたします。
数学I・A 過去問を丁寧に解説【第１０回】
１日休んでしまいましたが、今日からまた更新の方を再開していこうと思います。
前回からデータ分析に入りましたが、今回も大学入学共通テストの続きから問題を解いていこうと思います。
今回の問題は「箱ひげ図」と呼ばれるものですね。
箱ひげ図の読み方は基本ですが、おさらいしておきましょう。
両端が最小値と最大値、箱の中に書かれている線が「第２四分位数」（中央値）、箱の両端が第１四分位数と第３四分位数です。
基本もおさらいしたところで問題をみてみましょう。
最小値：５０、最大値４５０以上５００未満
第１四分位数：５０以上１００未満、第２四分位数：１００以上１５０未満
第３四分位数：２００以上２５０未満
ここで問の答えになる散布図をみてみましょう。
⓪ 50～100：9、100～150：6、150～200：4、200～250：2、
250～300：4、350～400：1、400～450：1、450～500：2
① ⇒ 最大値が４５０以下のため 除外
② 50～100：9、100～150：8、150～200：3、200～250：2、
250～300：3、350～400：2、450～500：2
③ 50～100：6、100～150：6、150～200：6、200～250：4、
250～300：2、350～400：2、400～450：1、450～500：2
全体が２９なので、第一四分位は約７番目、第２四分位は約１５番目、第３四分位は約２２番目
⓪ 第１四分位：50～100、第２四分位：100～150、第３四分位：250～300
② 第１四分位：50～100、第２四分位：100～150、第３四分位：200～250
③ 第１四分位：100～150、第２四分位：150～200、第３四分位：200～250
これらの中で箱ひげ図と合致するものは②となります。
↓ 参考書の中では高いものになりますが、数学も数をこなすことで試験慣れできるのでお勧めです。ただし、公式や基本的なことはできるようになった後でないと、応用だけできる人になってしまうので、気を付けてください。
次回もどうぞよろしくお願いいたします。
前回からデータ分析に入りましたが、今回も大学入学共通テストの続きから問題を解いていこうと思います。
今回の問題は「箱ひげ図」と呼ばれるものですね。
箱ひげ図の読み方は基本ですが、おさらいしておきましょう。
両端が最小値と最大値、箱の中に書かれている線が「第２四分位数」（中央値）、箱の両端が第１四分位数と第３四分位数です。
基本もおさらいしたところで問題をみてみましょう。
最小値：５０、最大値４５０以上５００未満
第１四分位数：５０以上１００未満、第２四分位数：１００以上１５０未満
第３四分位数：２００以上２５０未満
ここで問の答えになる散布図をみてみましょう。
⓪ 50～100：9、100～150：6、150～200：4、200～250：2、
250～300：4、350～400：1、400～450：1、450～500：2
① ⇒ 最大値が４５０以下のため 除外
② 50～100：9、100～150：8、150～200：3、200～250：2、
250～300：3、350～400：2、450～500：2
③ 50～100：6、100～150：6、150～200：6、200～250：4、
250～300：2、350～400：2、400～450：1、450～500：2
全体が２９なので、第一四分位は約７番目、第２四分位は約１５番目、第３四分位は約２２番目
⓪ 第１四分位：50～100、第２四分位：100～150、第３四分位：250～300
② 第１四分位：50～100、第２四分位：100～150、第３四分位：200～250
③ 第１四分位：100～150、第２四分位：150～200、第３四分位：200～250
これらの中で箱ひげ図と合致するものは②となります。
↓ 参考書の中では高いものになりますが、数学も数をこなすことで試験慣れできるのでお勧めです。ただし、公式や基本的なことはできるようになった後でないと、応用だけできる人になってしまうので、気を付けてください。
 | 2023年受験用 全国大学入試問題正解 数学（私立大編） [ 旺文社 ] 価格:5500円 |
 | 2023年受験用 全国大学入試問題正解 数学（国公立大編） [ 旺文社 ] 価格:5830円 |
 | 2023年受験用 全国大学入試問題正解 数学（追加掲載編） [ 旺文社 ] 価格:4400円 |
次回もどうぞよろしくお願いいたします。
