Examlex
On average,Africa has the lowest percentage of population over the age of 65.
Mean Number
The average value in a set of numbers, calculated by dividing the sum of all the numbers by the quantity of numbers.
T-test
A statistical test used to compare the means of two groups to determine if they are significantly different from each other.
Inference Conditions
Requirements that must be satisfied to validly use certain statistical inference methods.
Mean Annual Income
The average amount of money earned per year by an individual or household.
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