Which statement is true? The variance is: A a mean of squared deviations B a mea
ID: 3441725 • Letter: W
Question
Which statement is true? The variance is: A a mean of squared deviations B a mean of absolute deviations C no mean at all D a mean of positive and negative deviations If a store manager selected a sample of customers and computed the mean income for this sample, he has computed: A a statistic B a parameter C a qualitative value D none of the above Which statement is true? The variance is: A a mean of squared deviations B a mean of absolute deviations C no mean at all D a mean of positive and negative deviations If a store manager selected a sample of customers and computed the mean income for this sample, he has computed: A a statistic B a parameter C a qualitative value D none of the aboveExplanation / Answer
1.
The variance is
A. A mean of squared deviations [ANSWER]
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2.
OPTION A: A statistic.
It is because he got it from a SAMPLE. If he got it from a population, it would have been a parameter.
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