Save Question 18 (1 point) One sample of n-8 scores has a variance of s2 -6 and

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Save Question 18 (1 point) One sample of n-8 scores has a variance of s2 -6 and a second sample of n- 8 scores has s2- 10. If the pooled variance is computed the value obtained will be for these two samples, then closer to 6 than to 10 closer to 10 than to 6 exactly halfway between 6 and 10 cannot be determined without more information Save Question 19 (1 point) For which of the following situations would a repeated mcasures design have the maximum advantage over an independent measures design? When many subjects are available and individual differences are smal When very few subjects are available and individual differences are small When many subjects are available and individual differences are large When very few subjects are available and individual diffirences arelarg Save Question 20 point Ong advantage of a repcatco measuircs design is that titypically reqtires tewer participanits.than:an independent imeastires dcsium False

Explanation / Answer

pooled variance = ( n1* s1^2 + n2* s2^2 ) / (n1+n2)

so here n1=n2=8

s1 = 6 ; s2 = 10

so pooled variance is =

8*136/16

= 68

so pooled sd is

> 68 ** 0.5
[1] 8.246211
> 10-8.24
[1] 1.76
> 8.24-6
[1] 2.24

so it is closer to 10 than to 6

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