12. Measures of variability match-up Aa Aa There are multiple ways to refer to o

Question

12. Measures of variability match-up Aa Aa There are multiple ways to refer to or describe a variance or a standard deviation of either a population or a sample. Likewise, each measure has multiple appropriate equations or symbols. The left table consists of alternative ways of referring to each of these measures. The right table consists of equations or symbols for each of these measures Alternative Description a. Mean squared deviation from the population mean b. Mean squared deviation from the sample mean c. Square root of the population variance d. Square root of the mean squared deviation from the sample mean Equation or Symbol 3, (X-M)2 / (n-1) 4, (X-)2 / N For each of the following four measures, select one appropriate description from the left table (lettered) and one appropriate equation or symbol from the right table (numbered). Each answer will be used only once Alternative Description Equation or Symbol Measure Population standard deviation Population variance Sample standard deviation Sample variance

Explanation / Answer

Measure Alternatvie Description Equation or Symbol Population Standard deviation C 1 Population Variance A 4 Sample Standard deviation D 2 Sample Variance B 3

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