(2)の問題で分散を求める時7を2乗するのはなぜですか

227 △△× 重要 例題 147 変量の変換 次の変量xのデータについて, 以下の問いに答えよ。 844,893,872,844,830,865 (単位は点) (1)x-830 とおくことにより,変量uのデータの平均値えを求め,こ れを利用して変量xのデータの平均値x を求めよ。 x-830 (2) v= 7 めよ。 とおくことにより,変量xのデータの分散と標準偏差を求 p.217 基本事項 3, p.226 補足 準備 値を計算し とによって 89=5.76 CHART & SOLUTION 解答 (1)=x-830 より x=u+830 であるからx=+830 (2)x, vのデータの分散をそれぞれsx', su² とすると, x=7v+830 であるから 2722 である。よって,まずは s,” を求める。 (1)変量xと変量uのデータの各値を表にすると,次のように inf. (1) のようにxから一 定数を引くと計算が簡単に なる。 なる。 XC 844 893 872 844 830 865 計 u 14 63 42 14 0 35 168 よって、変量のデータの平均値は 168 u = =28 (点) ゆえに、変量xのデータの平均値は, x=u+830 から x=u+830=28+830=858 (点) (2)変量 x, v, v2のデータの各値を表にすると, 次のようにな 一般には,この一定数を平 均値に近いと思われる値に とるとよく, この値を 仮平 均という。共 5章 ◆x=u+b のとき x=u+b 17 る。 x 844 893 872 844 830 865 計 V 2 9 6 2 0 5 24 v2 4 81 36 4 0 よって、変量のデータの分散は 25 150 ・ 150 4 2 S₁²=v²(v)²= =9 6 Sx=|a|su ゆえに、変量xのデータの分散は, x=7v+830 から x=72.s2=49・9=441 x=av+bのとき x=av+b Sx²=a² sv² 2 標準偏差 は Sx=7su=7√9=21 (点) データの散らばり

この下線部訳がわかりません(特にハイフンの訳し方と,would seemの主語)。どなたか教えていただけないでしょうか？

These strange habits give us a good excuse to moan and complain about being too hot, cold or wet-and incidentally, would seem to bear out my opinion that our constant weather-speak is a social facilitator rather than evidence of a genuine obsession.

英訳です︎。添削お願いします🙏 (1) この頃になると私はいつも生まれ育った街を訪れる This time of year,I always visit the town where I was born and raised. (2) 宿題を済ませたら遊びに行っていいが... 続きを読む

原形不定詞はv o動詞の原形となりますが、この問題での原形不定詞が理解できません、わかる方教えてください

128 "I'm worried about Anna. She's really been depressed lately. ( ) in her room all day." "That sounds serious. ①All is she stay 3 All she does stay is 2 She does all is stay 4 All she does is stay 〈日本が

1から6おしえてください😭

C 〈 〉の動詞を必要に応じて適切な形に変え、 下線部に書きなさい。 (2点× 1. My father. 2. I wonder if it 3. By the time you three computers at home now. clear tomorrow. (be) (have) 20200d gob anine arted ob g , the work will be completed. (return) <come) in bed all day long. (lie) 4. He home just a few minutes ago. 5. Harry was ill, so he thought of any solution yet. (consider) 6. Though I. b diw gnival (b) this problem since yesterday, I haven We can stay in-hous

1から6教えて頂きたいです😭

1. It [ (a) is raining (b) was raining 2. John and Mary [ ] each other since 2006. (b) have known 時制総合 1 総合 B [] に入る最も適切なものを選びなさい。 (2点×6=12点) ] all day. I wonder when it will stop. (c) has been raining oldizsoy() vrülesd (d) raining (d) had been (c) were knowing (d) were known ]tomorrow. (a) rains (b) will rain (c) is rain (d) will be rain ] from the U.S. (b) will come (c) comes (d) will have come (a) have been knowing 3. I'll put off my departure if it [ 4. Hiroki will stay in Tokyo until Haruka [ (a) come 5.1 [ at all. ] in China for three years when I was a child, but I can't speak Chinese 's Dog Care Service!! (a) have been (b) have once stayed 6. Ms. Cooper [(20 (a) has 2.00 (b) have had We offer (c) lived dogo@k2 and (d) went 012 G) 00.00£2 (b) ] three car accidents before she was twenty. (c) had had $1(d) have

1～6教えて頂きたいです😭

C 〈 〉の動詞を必要に応じて適切な形に変え、 下線部に書きなさい。 (2点× 1. My father. 2. I wonder if it 3. By the time you three computers at home now. clear tomorrow. (be) (have) 20200d gob anine arted ob g , the work will be completed. (return) <come) in bed all day long. (lie) 4. He home just a few minutes ago. 5. Harry was ill, so he thought of any solution yet. (consider) 6. Though I. b diw gnival (b) this problem since yesterday, I haven We can stay in-hous

見ず知らずの人とでも、同じ本を読んでいたということだけで、仲良くなれることもある。 →You can sometimes make friends with a complete stranger , just because you are reading the sam... 続きを読む

アップグレードの助動詞の問題です。 よければ教えて頂きたいです。

2助動詞 22 We could not help but ( laugh ) at the sight. laughed 3 to laugh 23 We can't thank you ( ⑪very 2 too laughing ( 神奈川大 ) ) much for your kind help. We owe our success to you. ③ so ④as 24 彼はうそをついたのだから, アンが怒るのももっともなことだ。 He told a lie, so Ann ( ) get angry with him. Omay well 25 You might ( as well may as well ③may as (福島大) behnamob yo fiom might as well BE (浜松大) ceremony. ( 青山学院大) ) call a taxi. Then you will be on time for the wedding cere 2 as well as ③well so well to virus ☐ 26 You ( ) expect a river to flow backward as hope to persuade him into resignation. Omay well might as well had better would better (同志社大) 27 I would rather walk than ( ) a taxi. 1 take 2 taking ③3 to take ④taken ( 青山学院大 ) 28 One should not rely completely on first impressions, for appearances ( ) be deceiving. O shouldn't 2 have to 29 皆様のご多幸とご健康をお祈りします。 30 ③ mustn't it were no ) you all be happy and well! (a) It is not good that you didn't ask her name. (b) You ( ) have asked her name. ①ought to ②need 3 must ④can (大) work. OP ( 獨協医科大) (関西学院大) may 31 My sister ( ) here by now, for she took the early train. Omustn't have arrived 3 might arrive shouldn't have arrived ought to have arrived (上智大) "So the thief ( 32 "The window was unlocked and there is mud on the floor." come into the apartment that way." O might 2 must have ③ ought to A should have (学習院大) 33 Would you like ( ou like ) that work? 19 :以下 Ome to do to do to me O to me do 4 to me to do (名城大)

goとcomeの違いについて。 本来goは「行く」、come「来る」「行く」という意味を持っていますが、「行く」という英語を使いたい時どのように使い分ければいいのか分かりません。 自分なりに調べてはみたんですが、 go:話し相手がいる場所以外に行く come:話し相手が... 続きを読む