arithmeticmean 25.2,13.5,18.5,34.8

解答

平均值

25.2, 13.5, 18.5, 34.8

23

求解步骤

计算数据集的和:

i = 1 \sum n a_{i} = 92

计算数据集中的项的数量:

n = 4

将和除以项的数量然后化简:

23

= 23

50 n P r 43

l c d

m e d ian 14, 14, 15, 17, 21, 21, 22, 23

m o d e 6, 4, 4, 10, 5, 6, 6, 5, 1

a r i t hm e t i c m e an 7, 4, 8, 3, 9, 2, 12