統(tǒng)計學是ap體系的一門核心課程，是數(shù)學中的一個重要分支。主要的學習和考試主題有數(shù)據(jù)探索、抽樣實驗、概率和模擬、統(tǒng)計推斷等。下面我們分享一些統(tǒng)計學考試的選擇題真題，在復習的同學，趕緊點擊練題哦~

一、考試部分真題

1. Which of the following statements about residuals from the least squares line are true?

I.The mean of the residuals is always zero.

II.The regression line for a residual plot is a horizontal line.

III.A definite pattern in the residual plot is an indication that a nonlinear model will show a better fit to the data than the straight regression line.

A. I and II

B. I and III

C. II and III

D. I,II,and III

E. None of the above gives the complete set of true responses.

2.Data are obtained for a group of college freshmen examining their SAT scores (math plus writing plus critical reading) from their senior year of high school and their GpAs during their first year of college. The resulting regression equation is GpA^= 0.55 + 0.00161 (SAT total) with r = 0.632

What percentage of the variation in GpAs can be explained by looking at the linear relationship between GpAs and SAT scores?

A. 0.161%

B. 16.1%

C. 39.9%

D. 63.2%

E. This value cannot be computed from the information given.

3.In a study of whether the structure of the adult human brain changes when a new skill is learned,the gray matter volume of four individuals was measured before and after learning a new cognitive skill. The resulting scatterplot was:

The correlation above is 0. Three researchers each run the experiment on a new subject and each obtain an additional data point:

Match the above scatterplots with their new correlations.

A.I:-0.33 II:0 III:0.33

B.I:0 II:0.33 III:0.64

C.I:0 II:0.33III:1.0

D.I:-0.33 II:0 III1.0:

E.I:0 II:0.50 III:1.0

4.of winning percentage in home games versus average home attendance for professional baseball teams,the resulting regression line is:Winning percentage^=44+0.0003 Attendance

What is the residual if a team has a winning percentage of 55% with an average attendance of 34,000?

A. -11.0

B. -0.8

C. 0.8

D. 11.0

E. 23.0

二、選擇題答題技巧

統(tǒng)計學的選擇題備考，最好的方式是多刷題。答題技巧可以參考下面幾點建議：

1.通讀問題與答案

在各個問題中，你可以先仔細閱讀問題，再瀏覽答案選項，看答案最終會呈現(xiàn)什么形式。比如，有的問題包含計分，答案可能是數(shù)字，需要你計算積分的結果。

2.標記重要信息

通讀題目時，你可以在有重要信息的單詞、數(shù)字、函數(shù)定義、問題要求等下面劃線，這可以幫你清晰審題，不容易漏掉重要信息。

3.排除法

排除法是在做選擇題題目時的一個良好方法，不僅在Ap數(shù)學統(tǒng)計學的選擇題考試中可用，在其他科目，或者其他課程中都可以嘗試排除法。

排除法主要是幫你做選擇，大多數(shù)時候，你應該可以排除掉多余的幾個選項，最后只剩下兩個偏難的選項。

以上是ap數(shù)學統(tǒng)計學考試相關內(nèi)容分享，題目不會做，考試挑戰(zhàn)太大，同學們都可以讓留求藝的專業(yè)老師幫你解決課業(yè)問題!