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If the magnitude of means in two groups is substantially different,in order to compare their dispersion you would need
Population Means
The average value of a particular characteristic within a total population.
Credit Purchases
Transactions where goods or services are bought using credit rather than cash or debit, to be paid off at a later date.
Confidence Interval
A collection of values, sourced from statistical study of a sample, likely holding the unknown quantity of a population parameter.
Degrees Of Freedom
The number of independent values or quantities that can vary in the analysis without violating any constraints.
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