1.A research was carried out to study the relationship between inflation rate and unemployment rate. The data were summarized in the table below:

Inflation Rate	Unemployment Rate
4.5	9.5
2.3	4.5
3.6	6.7
6.6	10.2
0.8	2.6
1.7	3.2
2.7	5.2

State the independent variable.

2.A research was carried out to study the relationship between inflation rate and unemployment rate.The data were summarized in thetable below:

Inflation Rate	Unemployment Rate
4.5	9.5
2.3	4.5
3.6	6.7
6.6	10.2
0.8	2.6
1.7	3.2
2.7	5.2

Calculate the coefficient of correlation (r-value) and explain its meaning.

3.A research was carried out to study the relationship between inflation rate and unemployment rate.The data were summarized in thetable below:

Inflation Rate	Unemployment Rate
4.5	9.5
2.3	4.5
3.6	6.7
6.6	10.2
0.8	2.6
1.7	3.2
2.7	5.2

Construct a simple linear regression equation of the two variable.

4.A research was carried out to study the relationship between inflation rate and unemployment rate.The data were summarized in thetable below:

Inflation Rate	Unemployment Rate
4.5	9.5
2.3	4.5
3.6	6.7
6.6	10.2
0.8	2.6
1.7	3.2
2.7	5.2

Estimate the unemployment rate for an inflation rate of 7.0.