Find the mean of the following frequency distribution:
|
Scores |
5 |
6 |
7 |
8 |
9 |
|
Frequency |
2 |
1 |
3 |
2 |
2 |
Answer & explanation
Correct answer: option 3
The mean of the following frequency distribution:
|
Scores |
5 |
6 |
7 |
8 |
9 |
|
Frequency |
2 |
1 |
3 |
2 |
2 |
Total sum = 5 × 2 + 6 × 1 + 7 × 3 + 8 × 2 + 9 × 2 = 71
Total frequency = 2 + 1 + 3 + 2 + 2 = 10
So the mean of the following frequency distribution = 71/10 = 7.1