Employees on payroll. HM Revenue and Customs’ Pay as You Earn real time information shows that the number of employees on payroll declined in the UK in 2020. The following are the summary statistics (in millions) of the employees on payroll as measured monthly(?) in 2020: x = 28.468, m = 28.325, s = 0.347, QL = 28.213, and QU = 28.655.

a. Interpret, practically, the measures of relative standing.

b. Compute the interquartile range, IQR, for the data.

c. For what proportion of the 12 months has the number of employees on payroll been between 28.213 million and 28.655 million?