Can You Compute The Pooled Estimate Of Population Variance?
Consider a study in which the population variance estimate based on treatment group of 14 participants is 8, and the population variance estimate based on a control group of 17 individuals is 9. 7.25 8.55 9.22 10.05
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Sp^2 = ((n1-1)s1^2 +(n2-1)s2^2)/((n1-1)+(n2-1))
n1=14
n2=17
s1=8
s2=9
sp^2=[(14-1)8+ (17-1)9]/ 14-1 + 17-1
=[13*8 + 16*9]/13+16
=248/29
=8.55
n1=14
n2=17
s1=8
s2=9
sp^2=[(14-1)8+ (17-1)9]/ 14-1 + 17-1
=[13*8 + 16*9]/13+16
=248/29
=8.55
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