[問題]GWD22-15

[magic]

Q15:
The average (arithmetic mean) of a list of numbers is what percent of the sum of the numbers?
(1)There are 8 numbers in the list.
(2) The sum of the numbers in the list is 100.

答案是A
為什麼是A不是E阿@@
請大大們指點一下^^"

[StanleyHuang]

平均 = 總數 / 個數
由(1) ==> A = S / 8 => 所求 = A/S = 1/8

[GuDon]

這題我是醬想的
他問平均數是總數的幾趴
總數 * 1/各數 = 平均數
所以有各數就夠了
應該沒錯吧呵呵

[magic]

謝謝唷^^