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GRE数学例题：数据解释题型（7）

　　15.The median score for the class is

　　A.76

　　B.77

　　C.78

　　D.79

　　E.80

　　答案：B

　　16.If 5 points were added to each score, which of the following would not be affected?

　　A.The highest score

　　B.The mean for all scores

　　C.The median for the seniorsscores

　　D.The mode for the juniors scores

　　E.The standard deviation for all scores

　　答案：E

　　17.If the mean score for the juniors were known, which of the following could be calculated from the information given?

　　 The range of the scores for the seniors

　　 The median score for the juniors

　　 The mean score for the seniors

　　A.None

　　B. only

　　C. only

　　D. and

　　E. and

　　答案：C

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