Use the following frequency distribution table to find the value of the mean score.
| Scores | Frequency |
|---|---|
| 1 - 3 | 3 |
| 4 - 6 | 8 |
| 7 - 9 | 0 |
Follow-up Question: Find the value of the standard deviation. Give your answer accurate to 1 place after the decimal point.
Use the following frequency distribution table to find the value of the mean score.
| Scores | Frequency |
|---|---|
| 1 - 3 | 3 |
| 4 - 6 | 8 |
| 7 - 9 | 0 |
Follow-up Question: Find the value of the standard deviation. Give your answer accurate to 1 place after the decimal point.