下面是一道SAT数学练习题，后面附有详细的答案解析可供大家参考和借鉴。SAT数学题是大家在备考SAT数学考试的时候熟悉和了解相关的出题方式和解题思路最好的办法，下面我们来看看这道SAT数学练习题吧。

　　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

　　以上就是这道SAT数学练习题的全部内容，是一道代数方面的题目，在SAT数学考试中很有代表性。大家可以在备考SAT数学考试的时候，根据自己的实际情况，更加有选择性的备考SAT书序练习题，掌握SAT数学考试的做题方法和技巧。

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