- 在線時間
- 5491 小時
- 最後登錄
- 25-10-15
- 國民生產力
- 72
- 附加生產力
- 89153
- 貢獻生產力
- 0
- 註冊時間
- 06-10-23
- 閱讀權限
- 10
- 帖子
- 30975
- 主題
- 292
- 精華
- 3
- 積分
- 120200
- UID
- 107125
   
|
回復 yuen1818 的帖子
Lower Quartile (Q1): the number that divides the lower half of the data into two equal halves.
Upper Quartile (Q3): the number that divides the upper half of the data into two equal halves.
For example, given this data:
25, 26, 27, 28, 29, 30, 40, 41, 42
The Median is 29. Now, you need to find the lower quartile. You want to look at all the data that is below the median, so:
25, 26, 27, 28,
The median splits the data into two groups. Find the median of the lower group, which is 26.5 ((26+27)/2). The lower quartile is 26.5
The upper quartile is the median of these piece of data:
30, 40, 41, 42
The median is 40.5, so the upper quartile is 40.5
|
|