MGMT 1050 Chapter Notes - Chapter 13: Variance, F-Distribution, Test Statistic
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Chapter 13 remember when you test if two variances are equal the. Significance level are always 0. 05 and the df formula is always rounded. For f-distribution, the confidence level always remains the same. Note that the mean only depends on the denominator degrees of freedom and that for a large number of degrees of freedom, the mean of the f-distribution is approximately 1. The f-distribution, like the chi-squared distribution, also looks like a positively skewed normal curve. Again, its exact shape depends on the two values for degrees of freedom. We define fa, v1, v2 as the value of f with v1 and v2 degrees of freedom such that the area to its right under the curve is a this means: Since the f-random variable can only equal positive values, we define f1-a, v1, v2 as the value such that the area to the left is a.
