The weights (in kg) of 50 wrestlers are recorded in the following table
Weight (kg) 100-110 110-120 120-130 130-140 140-150
Number of wrestlers 4 14 21 8 3
Find the mean weight of the wrestlers

Solution:

Given, the data represents the weights of 50 wrestlers.

We have to find the mean weight of the wrestlers.

By direct method,

Mean = ∑fx / ∑f

From the table,

Mean = 6170/50

= 617/5

= 123.4

Therefore, the mean is 123.4 kg

✦ Try This: The weights (in kg) of wrestlers are recorded in the following table:

Find the mean weight of the wrestlers.

☛ Also Check: NCERT Solutions for Class 10 Maths Chapter 14

NCERT Exemplar Class 10 Maths Exercise 13.3 Problem 7

The weights (in kg) of 50 wrestlers are recorded in the following table: Weight (kg) 100-110 110-120 120-130 130-140 140-150 Number of wrestlers 4 14 21 8 3. Find the mean weight of the wrestlers

Summary:

The mean formula in statistics for a set is defined as the sum of the observations divided by the total number of observations. The mean weight of the 50 wrestlers is 123.4 kg

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