Kindly Answer the following.

Measures of Dispersion

1. Given the following table showing the scores of a sample of 40 students.

Class Interval	Frequency
16-18	5
19-21	4
22-24	8
25-27	8
28-30	7
31-33	6
34-36	2

Find the

1. Range
2. Mean Absolute deviation
3. Interquartile Range
4. Standard Deviation

1. The following table gives the frequency distribution of the monthly losses by a sample of 60 restaurants in the Province.

Losses (in thousand pesos)	Frequency
1-10	14
11-20	15
21-30	8
31-40	11
41-50	9
51-60	3

Find the

1. Range
2. Mean Absolute deviation
3. Interquartile Range
4. Standard Deviation