Question

Table 4 shows the salaries of 110 faculty members (in thousands of Rupees) of a reputed University.

SALARY RANGE	FREQUENCY
40-79	44
80-119	35
120-159	24
160-199	20
200-239	14
240-279	7
280-319	4
320-359	2

Use the aforementioned frequency distributed data to determine the following;

1. Range
2. Mean Deviation
3. Standard Deviation
4. Variance

Part – B:                                                                                                                                                                  

Using the Karl Pearson’s measure of Skewness, find the coefficient of skewness for each distribution, and describe the shape of the distribution.

1. Mean = 19.5, median = 22.7, standard deviation = 7.
2. Mean = 43.5, mode = 37.6, standard deviation = 6.2.
3. Mean = 136.25, median = 132.75, variance = 36.
4. Mean = median = 194.23

Answer 1