[問題]GWD6-34

[sandyclub]

Q34:
Professor Vásquez gave a quiz to two classes. Was the range of scores for the first class equal to the range of scores for the second class?

(1)In each class, the number of students taking the quiz was 26, and the lowest score in each class was 70.
(2)In each class, the average (arithmetic mean) score on the quiz was 85.

答案是E

是不是因為即使(1).(2)合起來，仍然不知道最高的成績。所以無法確定Range？

[liwuu]

嗯...通常要知道Range不容易!!
從過往題目來看,幾乎問Range的都算不出來...但真正考試時還是要仔細看看

[chris8888]

yeah, 要知道range, 必須要知道最高的分數和最低的分數, 這應該是只是在考概念.

他給了最低, 然後給AVG. 但這要知道range, 對於知道AVG.是沒有幫助的. 先把這概念建立好.

除非他另外給了一些資訊, 可以藉由AVG.去計算出最高分數, 不然算不出來. 所以考試時請注意是否有其他資訊可以幫助我們計算出最高分.