GGR270H1 Quiz: Variance Ratio Test
Document Summary
Used to test whether the population (and sample) variances are equal. The answer to this question will determine which version of the t statistic in the two sample. The test uses the f distribution, which is skewed: hypotheses. H0: no significant difference between the variance of sample one and the variance of sample 2. Therefore, the samples are drawn from the same population. Ha: there is a significant difference significant difference between the variance of sample 1 and the variance of sample 2. Therefore, the samples are drawn from different populations: critical value. The critical value for f is read from the f distribution table. In this table, the values are always greater than 1, which implies the ratio of the variances will be greater than 1. The table assumes you divide the larger sample variance by the smaller one.
