Question 145

The standard deviation of the first five even natural numbers is

Solution

first five even natural numbers = 2,4,6,8,10

Mean = 6

Standard deviation = $$\sqrt{\frac{\left(\ \left(6-2\right)^2+\left(6-4\right)^2+\left(6-6\right)^2+\left(6-8\right)^2+\left(6-10\right)^2\right)}{5}}$$ = $$\sqrt{\ 8}=2\sqrt{\ 2}$$


Create a FREE account and get:

  • Download Maths Shortcuts PDF
  • Get 300+ previous papers with solutions PDF
  • 500+ Online Tests for Free

cracku

Boost your Prep!

Download App