Index number for following data is :
| Relative index | 181 | 110 | 157 | 116 |
| Weight | 4 | 3 | 7 | 12 |
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 136.34
The Index number,
$I=\frac{∑(W×R)}{∑W}$
$=\frac{724+330+1099+1392}{4+3+7+12}=\frac{3545}{26}≃136.4$