Math, asked by ramteja10, 10 months ago

find the standard deviation of first 7 natural numbers​

Answers

Answered by Alcaa
6

Answer:

Standard deviation of first 7 natural numbers​ is 2.16 .

Step-by-step explanation:

The first seven natural numbers are 1, 2, 3, 4, 5, 6, 7 ;

            X                 X - Xbar                (X-Xbar)^{2}

            1                   1 - 4 = -3                      9

            2                  2 - 4 = -2                     4

            3                   3 - 4 = -1                      1

            4                   4 - 4 = 0                      0

            5                   5 - 4 = 1                       1

            6                   6 - 4 = 2                      4

            7                    7 - 4 = 3                      9

Firstly, Mean of first seven natural numbers = \frac{\sum X}{n}

             Mean = \frac{1+2+3+4+5+6+7}{7} = 4

Standard deviation = \sqrt{\frac{\sum (X-Xbar)^{2} }{n-1} } = \sqrt{\frac{9+4+1+1+4+9}{7-1} } = 2.16

Therefore, standard deviation of first 7 natural numbers​ is 2.16 .

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