Question

the mean deviation of 30 and 40 is​

Answer 1

Answer:

The mean deviation is 5.

Step-by-step explanation:

Given:

x₁ = 30, x₂ = 40

To find:

Mean deviation(MD) = ?

Formula:

MD = (Σxₙ-mean)/n

Step 1:

We first find the mean for the given values, i.e., 30 and 40.

Mean = (30+40)/2

Mean = 70/2

Mean = 35

Step 2:

The summation of the difference between the given values and the mean values.

Σ(xₙ-mean) = |30-35| + |40-35|

Σ(xₙ-mean) = 5 + 5

Σ(xₙ-mean) = 10

Step 3:

Substituting the calculated values in the formula of mean deviation, we get

MD = (Σxₙ-mean)/n

MD = 10/2

MD = 5

Therefore, the mean deviation of 30 and 40 is 5.

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