Author Question: If the calculated lower-control limit of a p chart is negative, _____. a. a mistake has been made ... (Read 40 times)

itsmyluck · **on:** Jun 24, 2018

If the calculated lower-control limit of a p chart is negative, _____.
a. a mistake has been made in the calculations
b. use the absolute value of the lower limit
c. it is set to zero
d. None of the answers is correct.

Question 2

All of the following are true about time series methods except
a. They discover a pattern in historical data and project it into the future.
b. They involve the use of expert judgment to develop forecasts.
c. They assume that the pattern of the past will continue into the future.
d. Their forecasts are based solely on past values of the variable or past forecast errors.