Correlation solving assignment

[arnob216]

Could anyone kindly help me solving ii, iv, v, vi, viii? I missed my classes due to family issues and now totally stuck on this assignment which has to be submitted in 2 days.

 

[Harry_the_cat]

What is your answer to (i)?
Do you have to calculate r manually or can you use a calculator/technology?

 

[arnob216]

What is your answer to (i)?
Do you have to calculate r manually or can you use a calculator/technology?

I just have to write the steps and show calculation process. I can use any calculator but have to show formula, consideration of data etc.

Teacher told me to consider Family income as independent variable and Average Grade Point as dependent variable (dependent on income)

 

[Harry_the_cat]

Ok so have you got a formula for r?