Question:

The mean of 12 numbers is 24. If 5 is added in every number, the new mean is

Updated On: Jun 23, 2023
  • 25
  • 29
  • 84
  • None of these.
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The Correct Option is B

Solution and Explanation

Answer (b) 29
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Concepts Used:

Mean Deviation

A statistical measure that is used to calculate the average deviation from the mean value of the given data set is called the mean deviation.

The Formula for Mean Deviation:

The mean deviation for the given data set is calculated as:

Mean Deviation = [Σ |X – µ|]/N

Where, 

  • Σ represents the addition of values
  • X represents each value in the data set
  • µ represents the mean of the data set
  • N represents the number of data values

Grouping of data is very much possible in two ways:

  1. Discrete Frequency Distribution
  2. Continuous Frequency Distribution