arithmeticmean 56,61,64,48,63,60,57,65,64,60,65,68,48,64,59,59

解答

平均值

56, 61, 64, 48, 63, 60, 57, 65, 64, 60, 65, 68, 48, 64, 59, 59

60.0625

求解步骤

计算数据集的和:

i = 1 \sum n a_{i} = 961

计算数据集中的项的数量:

n = 16

将和除以项的数量然后化简:

60.0625

= 60.0625

78, 80, 66, 68, 71, 64, 82, 71, 70, 65, 70, 75, 77, 86, 72

9, 9.5, 10, 10.5, 10.5, 11, 11, 11.5, 11.5, 11.5, 12, 12

84, 97, 77, 31, 84, 63, 58, 72, 47, 84, 69, 94, 43, 68

10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120

57, 61, 57, 57, 58, 57, 61, 54, 68, 51, 49, 64, 50, 4865, 52, 56, 46, 54, 49, 51, 47, 55, 55, 54, 42, 51, 5655, 51, 54, 51, 60, 62, 43, 55, 56, 61, 52, 69, 64, 4654