Solve the following:

1. Find the variance and the standard deviation of the following admission test results of ten (10) applicants. 88 85 80 70 55 86 82 78 68 50 2. What are the considerations in choosing methods of statistics analysis for measures of dispersion? 3. Why are measures of dispersion necessary to describe a set of data? 4. Calculate the mean and standard deviation. Interpret the spread of scores in a normal distribution. 78 76 48 74 82 75 65 69 78 86 5. Differentiate the variance from standard deviation and the quartile deviation