A group of students took a test and the following frequen...
A group of students took a test and the following frequency table shows the scores above
The mean score is
1.75
2
2.5
2.75
3
Correct answer is D
| Score | 0 | 1 | 2 | 3 | 4 | 5 | Total |
| Freq | 2 | 3 | 4 | 2 | 7 | 2 | 20 |
| fx | 0 | 3 | 8 | 6 | 28 | 10 | 55 |
ˉx=∑fx∑f
= 5520
= 2.75
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