The table shows the distribution of the lengths of 20 iron rods measured in metres : Length (m) 1.0 - 1.1 1.2 - 1.3 1.4 - 1.5 1.6 - 1.7 1.8 - 1.9 Frequency ...
Question 1 Report
The table shows the distribution of the lengths of 20 iron rods measured in metres :
| Length (m) | 1.0 - 1.1 | 1.2 - 1.3 | 1.4 - 1.5 | 1.6 - 1.7 | 1.8 - 1.9 |
| Frequency | 2 | 3 | 8 | 5 | 2 |
Using an assumed mean of 1.45, calculate the mean of the distribution.
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