question 1: yes 11, No 13
question 2: yes 19, No 7
what is the standard deviation of yes and no survey?
2013-11-19 3:15 pm
回答 (3)
2013-11-20 6:46 pm
Mean of yes = 15
n=2
Variance = [(11-15)^2+(19-15)^2] /1 = 16+16= 32
Standard deviation = sqrt(32) = 5.6569
Mean of No = 10
n=2
Variance = [(13-10)^2+(7-10)^2] /1 = 9+9= 18
Standard deviation = sqrt(18) = 4.2426
n=2
Variance = [(11-15)^2+(19-15)^2] /1 = 16+16= 32
Standard deviation = sqrt(32) = 5.6569
Mean of No = 10
n=2
Variance = [(13-10)^2+(7-10)^2] /1 = 9+9= 18
Standard deviation = sqrt(18) = 4.2426
2013-11-19 3:23 pm
yes
2013-11-19 3:16 pm
Maybe.
收錄日期: 2021-05-01 01:10:28
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20131119071508AAOnT1b