SAT數(shù)學練習題一道(包括答案).

　　下面是一道SAT數(shù)學練習題，后面附有詳細的答案解析可供大家參考和借鑒。SAT數(shù)學題是大家在備考SAT數(shù)學考試的時候熟悉和了解相關(guān)的出題方式和解題思路最好的辦法，下面我們來看看這道SAT數(shù)學練習題吧。

　　Mathematics > Standard Multiple Choice

　　Read the following SAT test question and then click on a button to select your answer.

　　The graph above shows the distribution of the number of days spent on business trips in 2010 by a group of employees of Company W. Based on the graph, what is the median number of days spent on business trips in 2010 for these employees?

　　Answer Choices

　　(A) 22

　　(B) 22.5

　　(C) 22.75

　　(D) 23

　　(E) 23.5

　　The correct answer is A

　　Explanation

　　Choice (A) is correct. There are 5 + 6 + 5 + 8 + 6 + 1 = 31 employees represented in the graph. If the employees are put in order according to the number of days spent on business trips from least to greatest (or from greatest to least), the median number of days spent on business trips is the number of days spent by the employee in the middle of the list. Since 312 = 15.5, this is the 16th employee (there will be 15 employees bore and 15 employees after the 16th employee in a list of 31 employees). From the graph, it can be seen that the 16th employee is in the group that spent 22 days on business trips (since 5 employees spent 20 days on business trips, 6 employees spent 21 days and 5 employees spent 22 days). Therore, the median number of days spent on business trips in 2010 for these employees is 22

　　以上就是這道SAT數(shù)學練習題的全部內(nèi)容，是一道代數(shù)方面的題目，在SAT數(shù)學考試中很有代表性。大家可以在備考SAT數(shù)學考試的時候，根據(jù)自己的實際情況，更加有選擇性的備考SAT書序練習題，掌握SAT數(shù)學考試的做題方法和技巧。

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