QRB 501 WEEK 3 PROBLEM SET STUDY GUIDE
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1. What percent of the yearly sales were the sales for July – September? 2. Use the bar graph to the right to determine the percent of increase in sales from the first to the second quarter. 3. The family budget is illustrated in the figure to the right. What percent of the takehome pay is allocated for food? 4. The family budget is illustrated in the figure to the right. What percent of take-home pay is spent for education is education, savings, and miscellaneous funds are used for
education? 5. Find the mean for the amounts $17,484; $14,983; $13,587; $14,600; $18,540; $14,978. 6. Find the mode for the amounts: $17,607; $14,940; $13,592; $14,520; $18,540; $14,940. 7. salaries for the research and development Department are given as $48,291; $27,957; $19,551; $32,400; and $37,582. Find the mean, the median, and the mode of the salaries. 8. Accountants often use the median when studying salaries for various businesses. What is the median of the following salary list: $32,023; $21,934; $27,512; $43,782; $38,860; $25,963? 9. A company wants to group a collection of autographed photos by price ranges. Make a frequency distribution of the prices using the intervals $0-$9.99, $10-$19.99, $20$29.99, $30-$39.99, and $40-$49.99. $2.50 $3.75 $8.28 $21.50 $43.00 $15.00 $26.55 $14.50 $12.75 $36.00 $37.50 $48.00 $7.50 $9.43 $7.50 $8.00 $12.50 $15.00 $9.50 $8.25 $14.58 $25.00 $18.50 $45.00 $32.50 $20.00 $10.00 $17.50 $6.75 $28.50 10. The seventh inning wants to group a collection of autographed photos by price ranges. The table with the prices is shown on the right. What percent of the collection is priced below $20? $4.99 $5.81 $6.13 $22.46 $48.64 $11.28 $26.45 $28.28 $11.76 $38.58 $35.86 $41.77 $7.81 $18.17 $4.74 $7.59 $11.41 $16.71 $2.93 $2.32 $11.24 $38.26 $26.45 $42.07 $37.18 $29.01 $13.98 $19.16 $7.09 $21.22
11. Use the hourly rates of the right (rounded to the nearest whole dollar) for 35 support employees in a private college to complete the frequency distribution and find the grouped mean. $13 $16 $10 $7 $14 $11 $15 $14 $15 $18 $16 $21 $20 $28 $16 $20 $12 $8 $11 $13 $19 $29 $20 $17 $22 $15 $18 $14 $7 $11 $15 $14 $14 $14 $7
12. Find the standard deviation of a series of a ACT scores listed below. 14, 27, 20, 29, 15 13. The data shows the total number of employee medical leave days taken for on-thejob accidents in the first six months of the year.
13, 6, 10, 10, 16, 9 Find the range of days taken for medical leave for each month. 14. The data shows the total number of employee medical leave days taken for on-thejob accidents in the first six months of the year: 11, 2, 18, 4, 20, 11. Find the mean number of days taken for medical leave each month. 15. The data shows the total number of employee medical leave days taken for on-thejob accidents in the first six months of the year: 14, 6, 20, 8, 22, 14. Find the sum of squares of the deviation from the mean.