Question
You have been employed as the newest member of our guest speakers Traffic Analysis team. Bike volumes, pedestrian volumes, and vehicle volumes were collected every
You have been employed as the newest member of our guest speakers Traffic Analysis team.
Bike volumes, pedestrian volumes, and vehicle volumes were collected every hour within a 24-hr day.
The volumes were collected in April, in an urban region of Toronto.
The following table shows the data taken from a sample of 1 day:
Bike volumes
| Pedestrian volumes
| Vehicle volumes
|
15 | 271 | 358 |
0 | 218 | 382 |
2 | 170 | 480 |
7 | 103 | 581 |
9 | 671 | 755 |
22 | 1871 | 810 |
101 | 2598 | 874 |
229 | 2978 | 1200 |
300 | 3844 | 1789 |
289 | 4785 | 1611 |
211 | 4002 | 1608 |
189 | 4511 | 1583 |
477 | 4220 | 1420 |
415 | 4301 | 1443 |
388 | 3230 | 1211 |
274 | 3580 | 1287 |
108 | 4617 | 981 |
177 | 4821 | 872 |
192 | 3544 | 813 |
98 | 3781 | 765 |
56 | 2984 | 497 |
34 | 1077 | 487 |
0 | 408 | 351 |
0 | 411 | 277 |
Task 1 :
Select ONLY ONE of the three volumes given in the above table.
Perform the given calculations below (2 marks each)
You may use Microsoft Excel or perform calculations by hand.
You only need to state the final answer.
Calculate the sample mean
Calculate the sample standard deviation
Calculate the confidence interval for 95% level of confidence to estimate the mean daily volume
Interpret the result
Would the above mean volume estimation be accurate all year round?
Explain why or why not.
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