Question

Siguen - Chapter 3 8. O {Exercise 3.31) The results of Accounting Principals latest Workonomix survey indicate the average American worker spends $1,092 on coffee annually (The Consumerist, January 20, 2012). Are there differences in coffee expenditures by age group? Samples of ten consumers selected for three age groups (18-34, 35-44, and 45+), and the dollar amount each consumer spent last year on coffee is provided below. Click on the webfile logo to reference the data. o o o WEB file o o o o o o 18-34 35_44 45 and Older 1355 969 1135 115 434 956 1456 1792 400 2045 1500 1374 1621 1277 1244 994 1056 825 1937 1922 763 1200 1350 1192 1567 1586 1305 1390 1510 a. Compute the mean, median, and standard deviation for the each of these three samples. Round your answers to one decimal place. o 19. o 1415 o 20. 21. 0 o o 22. o 18-34 35-44 o Mean o Median 25. O Standard Deviation b. What observations can be made based on these data? The input in the box below will not be graded, but may be reviewed and considered by your instructor.

Answer 1

First sample- mean=1368, median=1307.5 and standard deviation=513.1

Second sample- mean=1330.1, median=1166.5 and standard deviation= 409.6

Third sample- mean= 1070.4, median= 1034.5 and standard deviation= 317.4