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# Find the Mean Salary of 60 Workers of a Factory from the Following Table - CBSE Class 9 - Mathematics

ConceptMeasures of Central Tendency

#### Question

Find the mean salary of 60 workers of a factory from the following table:-

 Salary (in Rs) Number of workers 3000 16 4000 12 5000 10 6000 8 7000 6 8000 4 9000 3 10000 1 Total 60

#### Solution

We know that

"Mean "=(sumf_ix_i)/(sumf_i)

"The value of "sumf_ix_i" and "sumf_i" can be calculated as follows."

 Salary (in Rs) (xi) Number of workers (fi) fixi 3000 16 3000 × 16 = 48000 4000 12 4000 × 12 = 48000 5000 10 5000 × 10 = 50000 6000 8 6000 × 8 = 48000 7000 6 7000 × 6 = 42000 8000 4 8000 × 4 = 32000 9000 3 9000 × 3 = 27000 10000 1 10000 × 1 = 10000 Total sumf_i=60 sumf_ix_i=305000

"Mean salary "=305000/60=5083.33

Therefore, mean salary of 60 workers is Rs 5083.33.

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#### APPEARS IN

NCERT Solution for Mathematics Class 9 (2018 to Current)
Chapter 14: Statistics
Ex. 14.40 | Q: 5 | Page no. 269

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Solution Find the Mean Salary of 60 Workers of a Factory from the Following Table Concept: Measures of Central Tendency.
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