Standard Deviation | Variance| Effect of adding and multiplying constant | Mean Deviation

Deviation and Variance

Find the mean, standard deviation and variance of first 10 multiples of 3.

Consider the following statements: 1 Both variance and standard deviaiton are measures of variability in the population. 2. Standard deviation is the square of the variance. Which of the above statements is/are correct?

OMR|Another Formula For Standard Deviation|Questions|Shotcut Method To Find Variance And Standard Deviation|Questions

OMR|Another Formula For Standard Deviation|Questions|Shotcut Method To Find Variance And Standard Deviation|Questions

Mode,Range,Mean Deviation,Variance and Standard Deviation

Let s be the standard deviation of n observations. Each of the n observations is multiplied by a constant c. Then the standard deviation of the resulting number is