Q1. If a sample of data has mean 25 and variance 25, calculateits coefficient of variation.

Q2. Find the class boundaries for the class 2.15 - 3.93.

Q3. Given the following sample data 32, 19, 57, 48, 44, 50, 42, 49, 53 and 46, calculate the standard deviation.

Q4. The first four moments of a distribution are 1, 4, 10 and 46 respectively. Compute the moment coefficients of skewness and kurtosis