Descriptive Statisticsmedium
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A frequency distribution of test scores is:
| Score Range | Frequency |
|---|---|
| 50–60 | 5 |
| 60–70 | 12 |
| 70–80 | 18 |
| 80–90 | 10 |
| 90–100 | 5 |
Using class midpoints (55, 65, 75, 85, 95), what is the estimated mean score?
A frequency distribution of test scores is:
| Score Range | Frequency | |---|---| | 50–60 | 5 | | 60–70 | 12 | | 70–80 | 18 | | 80–90 | 10 | | 90–100 | 5 |
Using class midpoints (55, 65, 75, 85, 95), what is the estimated mean score?