- 1 Marks
QTB – Nov 2014 – L1 – SA – Q11 – Data Collection Analysis
Calculates the variance of a grouped data set representing traveling times.
Question
The following data are for the travelling time to and from work in hours per day for a group of factory workers:
| No. of hours | No. of workers |
|---|---|
| Under 1 | 20 |
| 1 up to 2 | 10 |
| 2 up to 3 | 5 |
| 3 up to 4 | 4 |
The variance of the data is
A. 1.00
B. 1.01
C. 1.02
D. 1.12
E. 1.22
Find Related Questions by Tags, levels, etc.
- Tags: Frequency Distribution, Travel Time, Variance
- Level: Level 1
- Topic: Data Collection Analysis
- Series: NOV 2014
Report an error