sat数学备考的关键就在于做题，多多练习总是没错的，但是大家要注意的是在做题的时候不要盲目的做题，要学会摸索出规律来，sat数学 在线做题，赶紧进来看看吧!
Mathematics>Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
For each of the largest 21 airline companies in Europe, the average flight delay wascalculated and is shown in the dot plot above. If the dots representing the two airlines withthe longest average flight delays are removed from the dot plot, what will happen to themean, median, and range of the new data set?
A.Only the mean will decrease.
B.Only the mean and range will decrease.
C.Only the mean and median will decrease.
D.The mean, median, and range will decrease.
答案：B
解析：
Choice B is correct.