Problem 13BSC

Using Technology to Generate Normal Quantile Plots. In Exercises, use the data from the indicated exercise in this section. Use computer software (such as STATDISK, Minitab, Excel, or StatCrunch) or a TI-83/84 Plus calculator to generate a normal quantiteplot. Then determine whether the data come from a normally distributed population.

Flight Arrival Delays The arrival delay times (minutes) as listed in Data Set 15.

Solution 13BSC

By using the Normal Quantile Plot to determine whether the data come from a normally distributed population.

The flight arrival delays (minutes) normal quantile plot are:

By using MINITAB, we draw the normal quantile plot of flight arrival delays with the help of following steps:

1) Import the given data into the worksheet.

2) Select Probability Plot from the Graph and choose Single option.

3) Select Graph variable option.

4) Click Ok.

The flight arrival delays normal quantile plot suggests that points are not normally distributed. The patterns of the points are not reasonably close to straight line. We conclude that the flight arrival delays data values are coming from population having a distribution that is not normal.