The number of four-period centered moving averages of a time series with 20 time periods is:
a. 16 c. 24
b. 20 d. 28
Q. 2If you are testing to see if a weight loss program is working, and you subtract the weights before - after for a group of 10 people, the alternative hypothesis is that the mean difference is ____________________ 0.
Fill in the blank(s) with correct word
Q. 3If we want to measure the seasonal variations on stock market performance by quarter, we would need:
a. 4 indicator variables c. 2 indicator variables
b. 3 indicator variables d. 1 indicator variable
Q. 4In a matched pairs experiment the parameter of interest is the ____________________ of the population of ____________________.
Fill in the blank(s) with correct word
Q. 5We calculate the five-period moving average for a time series for all time periods except the:
a. first five periods c. first and last period
b. last five periods d. first two and last two periods
Q. 6The degrees of freedom for a test of the mean of the paired differences is the number of ____________________ minus ____________________.
Fill in the blank(s) with correct word
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