QUESTION 17 The population mean is the sum of the values in the sample divided b

Question

QUESTION 17 The population mean is the sum of the values in the sample divided by the sample size, n. O True False QUESTION 18 The population variance and the population standard deviation measure variation in a population. O True False QUESTION 19 For a particular population the population variance and the population standard deviation will always be expressed in the same units. True False QUESTION 20 For a particular population the population mean and the population standard deviation will always be expressed in the same units True False

Explanation / Answer

QUESTION 17

The population mean is the SUM of the values in the sample divided by the sample size, n.
ans: True
Explanation: Sum of all the values divided by the number of values. This can either be a population mean (denoted by mu) or a sample mean (denoted by x bar)

QUESTION 18
The population variance and the population standard deviation measure variation in a population.  
ans: True

QUESTION 19
For a Partiular population the population variance and the population standard deviation will always be expressed in the same
ans: True

QUESTION 20
For a particular population the population mean and the population standard deviation will always be expressed in the same units.
ans: False
Explanation:
A rough intuitive description of standard deviation is the average 'distance' to the mean. So just like the mean's units are the same as the data, but in population variance the differences are squared, the units of variance are not the same as the units of the data.

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