Descriptive Statisticsmedium
0:00.0
A cumulative relative frequency table shows:
| Score Range | Cumulative Relative Frequency |
|---|---|
| Up to 40 | 0.20 |
| Up to 50 | 0.45 |
| Up to 60 | 0.75 |
| Up to 70 | 0.95 |
| Up to 80 | 1.00 |
Using linear interpolation, what is the approximate percentile rank for a score of 55?
A cumulative relative frequency table shows:
| Score Range | Cumulative Relative Frequency | |---|---| | Up to 40 | 0.20 | | Up to 50 | 0.45 | | Up to 60 | 0.75 | | Up to 70 | 0.95 | | Up to 80 | 1.00 |
Using linear interpolation, what is the approximate percentile rank for a score of 55?