Maharashtra State Board course SSC (English Medium) Class 9
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The Monthly Salaries in Rupees of 30 Workers in a Factory Are Given Below. - Algebra

ConceptMeasures of Central Tendency

Question

The monthly salaries in rupees of 30 workers in a factory are given below.
5000, 7000, 3000, 4000, 4000, 3000, 3000, 3000, 8000, 4000,
4000, 9000, 3000, 5000, 5000, 4000, 4000, 3000, 5000, 5000,
6000, 8000, 3000, 3000, 6000, 7000, 7000, 6000, 6000, 4000
From the above data find the mean of monthly salary.

Solution

The monthly salaries in rupees of 30 workers in a factory are given below:
5000, 7000, 3000, 4000, 4000, 3000, 3000, 3000, 8000, 4000,
4000, 9000, 3000, 5000, 5000, 4000, 4000, 3000, 5000, 5000,
6000, 8000, 3000, 3000, 6000, 7000, 7000, 6000, 6000, 4000

The frequency table of the above data is as follows:

 Salaries (Rs.) (xi) Number of workers (fi) fixi 3000 8 24000 4000 7 28000 5000 5 25000 6000 4 24000 7000 3 21000 8000 2 16000 9000 1 9000 Total N= 30 Total = 147000
Mean = 147000 / 30 = 4900
So,the mean of monthly salary is Rs. 4900.
Is there an error in this question or solution?

APPEARS IN

Balbharati Solution for Balbharati Class 9 Mathematics 1 Algebra (2019 to Current)
Chapter 7: Statistics
Practice set 7.5 | Q: 4 | Page no. 125
Solution The Monthly Salaries in Rupees of 30 Workers in a Factory Are Given Below. Concept: Measures of Central Tendency.
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