Household energy expenditure. Refer to the annual total household expenditure on energy for the year 2011 to 2020 data in Exercise 2.43 (p. 89). Recall that annual total household expenditure (in £ millions) data on gas, on electricity, on liquid fuels, and the total of individual household’s expenditure on energy are saved in the ENERGY file. The total expenditure is listed in the accompanying table. 983,041 1,000,382 1,030,212 1,056,111 1,087,611 1,127,436 1,139,004 1,153,505 1,166,026 1,042,290

a. Find the median, lower quartile, and upper quartile for the data.

b. Find IQR for the data.

c. Graph the data with a box plot.

d. Do you detect any outliers?