Question 1: Find the Standard Deviation for the following distribution:  

Answer:

Median value of is 34.5

Calculation of Variance and Standard Deviation

Question 2: Table below shows the frequency with which alpha particles were radiated from a diskette.

Calculate the mean and variance.

Answer:

Calculation of Variance and Standard Deviation

Question 3: Find the mean, and Standard deviation for the following data:

Answer:

(i)

Computation of mean and standard deviation

(ii)

Computation of mean and standard deviation

Question 4: Find the standard deviation for the following data:

Answer:

(i)

Calculation of Variance and Standard Deviation

(ii)

Calculation of Variance and Standard Deviation