1. Calculate the pooled variance for these two samples’ scores:
Sample 1: 45, 59, 65, 26, 70, 52, 55
Sample 2: 81, 72, 69, 59, 75, 71, 62
2. For the following set of data from two independent samples, conduct an independent samples t test (by hand or using SPSS) to determine if the mean scores for each sample are significantly different.
Sample 1: 5, 7, 4, 7, 2, 6, 7, 3, 4, 5
Sample 2: 3, 4, 3, 4, 3, 3, 3, 4, 5, 4, 3