Home » Calculate the standard deviation of the following marks; 2, 3, 6, 2, 5, 0, 4,…

Calculate the standard deviation of the following marks; 2, 3, 6, 2, 5, 0, 4,…

Calculate the standard deviation of the following marks; 2, 3, 6, 2, 5, 0, 4, 2

  • A.
    1.5
  • B.
    1.7
  • C.
    1.8
  • D.
    1.9
Correct Answer: Option C
Explanation
x 2 3 6 2 5 4 2 24
x – (bar{x}) -1 3 -1 2 -3 1 -1  
((x – bar{x})^2) 1 9 1 4 9 1 1 26

Mean = (frac{24}{8} = 3)

Standard deviation = (sqrt{frac{26}{8}})

= (sqrt{3.25})

= 1.802 (approeq) 1.8

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