97. 生数据
raw data
24
35
41
34
38
33
29
28
30
28
24
26
40
28
27
n=15
median point 中位点
median 中位数
排列好的数据
ordered data
(data pt. #)
41
40
38
35
34
33
30
29
28
28
28
27
26
24
24
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
15+1/2
29
中位数
middle value
第八个数据
8th data point
=8th data point 第八个数据
98. 中位数或平均数
median or meanMean is better when 平均数
sample size is small 数据少
computing year to year changes 计算年度变化
median is better when 中位数比较好当
a sample has widely varying values and does not approximate a normal distribution 数据有很大的差额
you want to identify a “typical” pay rate 要辨别有代表性的新酬
一般,中位数是最常用的
in most cases, the median value is the value based.
如用平均数来断定工资程度成本会比较高
if you use mean as the mid-point to set your salary policy,your package is likely to be more expensive.
99. 计算百分比之25及百分比75Calculate 25th and 75th percentile 公式
formula:p(n+1)
n=23
25th percentile
=(0.25)(23+1)
=(0.25)924)
=6th data point
42075 percentile
=(0.75)(23+1)
=(0.75)(24)
=18th data point
=462