ConceptMean of Grouped Data

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#### Question

The following distribution shows the daily pocket allowance of children of a locality. The mean pocket allowance is Rs.18. Find the missing frequency *f*.

Daily pocket allowance (in Rs |
11 − 13 | 13 − 15 | 15 −17 | 17 − 19 | 19 − 21 | 21 − 23 | 23 − 25 |

Number of workers |
7 | 6 | 9 | 13 | f | 5 | 4 |

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#### Reference Material

Solution for question: The following distribution shows the daily pocket allowance of children of a locality. The mean pocket allowance is Rs.18. concept: Mean of Grouped Data. For the course CBSE