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Question

Salaries of 30 people are represented in the grouped frequency distribution table given below.
Salary (In Rupees) Number of people
5000-10000             5
10000-20000            10
20000-30000            15

How many people salary lie in between ₹10000 to ₹30000? 
  1. 5
  2. 10
  3. 15
  4. 25


Solution

The correct option is D 25
From the table, we find that for the interval 10000 - 20000, there are 10 people and for the interval 20000 - 30000 there are 15 people. The total number of people whose salaries lie between  ₹10000 to  ₹30000 is 25.

10 + 15 = 25 

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