| x | 10 | 15 | 20 | 25 | 30 | 35 | 40 |
| f | 7 | 7 | 13 | 15 | 7 | 4 | 5 |
A) 23.4412
B) 23.34
C) 23.45
D) 23.55
E) None of these
Correct Answer: C
Solution :
Explanation \[Mean=\frac{\sum {{x}_{i}}{{f}_{i}}}{\sum {{f}_{i}}}\] \[=\,\,\frac{70 +105+ 260 + 375 + 210 +140 + 200}{58}\,\,=\,\,23.45.\]
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