Discussion
The following statistical test is used to ascertain whether there is significant difference between the variances of two sets of observations :
Answer: B
The F-test is used to find out whether there is a significant difference between the variances of two sets of observations. It takes the ratio of the two sample variances and compares it with the tabulated F value for the degrees of freedom. The t-test compares means, the chi-square test examines goodness of fit or independence between categorical data, and regression relates a dependent variable to independent variables. Neither of these tests the equality of variances.
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