Math Review

It is a statistical method used to assess whether there are any statistically significant differences between the means of three or more independent groups.

• Pooled Variance T test

• Anova

• Null Hypothesis

• Independent T Test

If t stat is greater than t crit, then we (a)   the null hypothesis.

(First capital letter)

It is a statistical test used to compare the means of two independent groups when the variances are equal.

(a)  

What should be used to test the homogeneity of the variances of two independent samples?

• .05

• F Crit

• T Test

• F Test

Pooled Variance is Population means from two unrelated groups are equal.

• True

• False

The pooled variance t-test is a non-parametric test.

• True

• False

The pooled variance t-test is used to compare the means of two independent, normally distributed populations.

• True

• False

Answer explanation

The pooled variance t-test is used to compare the means of two independent, normally distributed populations.

In a pooled variance t-test, the null hypothesis is that the two means being compared are equal.

• True

• False

Answer explanation

The null hypothesis in a pooled variance t-test is that the two means being compared are not equal.

In a pooled variance t-test, the null hypothesis is that the two means being compared are equal.

• True

• False

Answer explanation

The critical value in a pooled variance t-test depends on the level of significance, the degrees of freedom, and the one-tailed or two-tailed test.

In a pooled variance t-test, the critical value for a significance level of 0.05 is:

• A. 1.94

• B. 1.96

• C. 2.05

• D. 2.1