Qn.1:

Employees of a certain institution are paid hourly, a sample of 18 employees were interviewed and the following results were recorded; 6 earned between $14 and $18, 5 earn between $19 and $23, 3 earned between $24 and $28, 3 earn between $29 and $33, 1earns between $34 and $38 per hour.

a) Present the given information by use of a frequency distribution table.

b) Generate the hourly boundaries

c) Determine the institutions average hourly pay

d) Construct a histogram

Qn.2:

The following random sample data give age for employees of KSMC Ltd;

a) Determine all the quartiles and quartile deviation to present this age

b) Calculate the employees mean/average age

c) Compute the ages standard deviation

d) Calculate the skewness of employee age

e) Interpret your skewness results

Qn.3:

A sample of 13 medium size supermarkets in Kampala was taken and mangers were asked about previous Months sales (x in 00,000) of product (y in tonnes).

Table 3: Results of Sales

X	20	48	29	19	12	15	11	38	13	34	44	40	45
Y	6	6	9	6	4	2	3	2	1	10	4	3	5

a) Define the term correlation giving its two types and state them

b) Compute respectively

c) Determine the Pearsons product moment correlation coefficient (r)

d) Calculate the Coefficient of Determination

e) Explain your results