Examlex
If an investment has a 20% (0.20) probability of returning $1,000; a 30% (0.30) probability of returning $1,500; and a 50% (0.50) probability of returning $1,800; the expected value of the investment is:
F-test
A statistical test used to compare the variances of two samples to determine if they come from populations with equal variances.
Population Variances
A measure of the variability or spread of a population's data points, representing the average of the squared deviations from the mean.
Two-tail Test
A statistical test used to determine whether there is a significant difference between a sample and a population mean in either direction.
Sample Variances
A measure of the spread or dispersion of a set of sample data points.
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