Examlex
Andrew is allowed to purchase a reasonably priced notebook computer for graduation.He sees one at Excel Electronics for $999.99 and calls his parents to assure them the computer costs "less than a thousand." Both Andrew and Excel Electronics are using _____ to downplay the price of the computer.
T-test
A statistical test used to compare the means of two groups to determine if they are significantly different from each other.
Population Variances
The squared difference between each data point in the entire population and the mean of the population, indicating overall data spread.
Test Statistic
A calculated value from sample data used to decide whether to reject the null hypothesis in hypothesis testing.
Degrees of Freedom
The quantity of distinct values or numbers that can be allocated to a statistical distribution.
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