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12. Sixty-five randomly selected car salespersons were asked the number of cars

ID: 3366733 • Letter: 1

Question

12. Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars; nineteen generally sell four cars; twelve generally sell five cars; nine generally sell six cars; eleven generally sell seven cars. Complete the table. Data Value # cars) Frequency Relative Frequency Cumulative Relative Frequency Table 2.42 13. What does the frequency column in Table 2.42 sum to? Why? 14. What does the relative frequency column in Table 2.42 sum to? Why? 15. What is the difference between relative frequency and frequency for each data value in Table 2.42?

Explanation / Answer

Data value (cars)       Frequency        Relative frequency    cumulative frquency    relative frequency - frequency

3                                      14              0.2154            14                             -13.7846

4                                      19                        0.2923                               33                             -18.7077

5                                      12                        0.1846                               45                              -118154

6                                       9                         0.1385                               54                               -8.8615

7                                       11                        0.1692                               65                              -10.8308

Total                                  65