When using the pooled variance t-test, if the sample size for the first group is 16 and the sample size for the second group is 25, how many degrees of freedom do we have when finding the critical values?
When we finding the critical value, the degree of freedom is given by
Given n1=16, n2= 25
Df = n1+ n2 - 2
= 16+25 - 2
Df = 41-2
Df =39
When using the pooled variance t-test, if the sample size for the first group is 16...
A) There are two ways to calculate pooled variance? When do you use weighted and unweighted? How are the two formulas different? B) How do you calculate degrees of freedom for an independent-samples t-test?
Determine how many degrees of freedom we have in a one-sample t-test for a sample size of N=26. (Hypothetical)
Assume that you have a sample of n 1-7, with the sample mean X1-43, and a sample standard deviation of S1-4, and you have an independent sample of n2-13 from another population with a sample mean of x2 39 and the sample standard deviation S2-7. Complete parts (a) through (d). Click here for page 1 of critical values oft. Click here for page 2 of critical values of t. a. What is the value of the pooled-variance ISTAT test statistic...
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when variances between two samples are not equal in a paired sample t test, the pooled variance must be computed and used 8n place of the estimated standard error. t or f
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