firstquartile 10,10,13,20,52,43,31,31

解答

下四分位数

10, 10, 13, 20, 52, 43, 31, 31

11.5

求解步骤

按升序排列项

10, 10, 13, 20, 31, 31, 43, 52

取升序集中的前半部分:

10, 10, 13, 20

10, 10, 13, 20

的中位数:

11.5

11.5

a r i t hm e t i c m e an 38, 23, 38, 15, 12, 19, 12, 21, 22, 31, 13, 18, 21, 17, 15

s t d 12.5, 9.8, 13.5, 11.2, 12.3, 14.2, 11.7, 9.8, 12.6, 10.4

m e d ian 7, 4, 2, 5, 8, 2, 4, 8, 6, 3

10 C 0

C (15, 3)