The mean of two groups combined
number15 pts
Two groups took the same test:
| Group | Number of students | Mean score |
|---|---|---|
| A | 18 | 72 |
| B | 30 | 64 |
What is the mean score of all 48 students combined?
Two groups took the same test:
| Group | Number of students | Mean score |
|---|---|---|
| A | 18 | 72 |
| B | 30 | 64 |
What is the mean score of all 48 students combined?