A group of students took a test and the following frequency table shows the scores above
The mean score is
A.
1.75
B.
2
C.
2.5
D.
2.75
E.
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 |
\(\bar{x} = \frac{\sum fx}{\sum f}\)
= \(\frac{55}{20}\)
= \(2.75\)