For which of the following should we use an Rchart to monito

For which of the following should we use an R-chart to monitor process quality?

Select one:

a. Weighing trucks at a highway inspection station to determine if they are overloaded

b. Deciding whether an airliner has sufficient fuel for its trip

c. Student grades measured from 1 to 100

d. Determining whether vehicles from a motor pool will run

e. Determining the accuracy of a forecast of \"snow\"

Solution

R chart is a type of control chart used to monitor variables data when reading is collected for a parameter for a process to find out if the process is according to the acceptable limits.

The correct answer is option e. determining the accuracy of a forecast of \"snow\". This is correct because the process of forecasting the snow will have upper and lower limits and the correct forecasts should fall between these limits.