1.The following data shows the number of years of employment for 20 respondents: 8, 9, 8, 9, 2, 2, 8, 1, 9, 3, 6, 8, 2, 6, 10, 9, 9, 5, 1, 5.

1. Construct a frequency distribution.

2. Calculate the measures of central tendency and of variation, and explain their meaning.

3. Calculate P35 and explain its meaning.

4. Describe the shape of the distribution.

2. Use the following table to answer questions 1 & 2

Table I

Attitude to Social class

birth control Lower Middle Upper All

Less favorable 362 296 65 723

More favorable 186 334 157 677

Total 548 630 222 N=1400

1. Which category of social class is most favorable to birth control ?

2. Use one appropriate measure of association to explain the relationship between the two variables in terms of strength and direction.

3-This table shows the rank of 8 people on the number of friends they have(X) and the time they spent on the Internet (Y), where 1=highest and 8=lowest.

X 12345678 N=8

Y 21354867

Use an appropriate measure of association to explain the relationship between the two variables in terms of strength and direction.