Constructing Histograms. In Exercises, construct the histograms and answer the given questions.
Flight Taxi-Out Times Use the relative frequency distribution from Exercise 1 in Section to construct a histogram. If the quality of air traffic procedures was improved so that the taxi-out times vary much less, would the histogram be affected?
Exercise 1
Constructing Frequency Distributions. In Exercise, use the indicated data and construct the frequency distribution.
Flight Taxi-Out Times Refer to Data Set 15 in Appendix B and use the times required to taxi out for takeoff. Begin with a lower class limit of 10 min and use a class width of 5 min. Based on the result, does it appear that the time required to taxi out can be predicted with reasonable accuracy?
Solution 18BSC
In a relative frequency distribution, the relative frequency for a class obtain by dividing the corresponding class frequency with the total of all the given frequencies in that distribution and the resultant is multiply with 100%.
From the given information, the relative frequency distribution for the times required to taxi-out for takeoff (in minutes) is
| the times required to taxi out for takeoff (in minutes) | Frequency | Relative frequency |
10 – 14 | 10 | |
15 – 19 | 20 | |
20 – 24 | 9 | |
25 – 29 | 1 |
