8.1 Correlation plots

In this exercise you will learn to visualize the pairwise relationships between a set of quantitative variables. To this end, you will make your own note of 8.1 Correlation plots from Data Visualization with R.

Q1 What factors have positve correlation with home price?

fireplaces, bedrooms, living areas, rooms, bathrooms, land value, pctcollege, and lot size

Q2 What factors have strong positve correlation with home price?

living area, bathrooms, land value

Q3 What factors have negative correlation with home price?

age

Q4 What factors have strong negative correlation with home price?

age

Q5 What set of two variables has the highest positive Pearson Product-Moment correlation coefficient? What set of two variables has the greatest negative Pearson Product-Moment correlation coefficient?

rooms and living area

Q6 What set of two variables has the Pearson Product-Moment correlation coefficent that is closest to zero? Would you be sure that the two variables are not related at all? What would you do to check?

lot size/age and land value/age. There is no strong linear correllation, but there still could be a non-linear correllation.

Q7 Plot correlation for CPS85 in the same way as above. Repeat Q1-Q6.

Q8 What factors have positve correlation

age/experience, age/wage, wage/experience, wage/education

Q9 What factors have strong positve correlation?

age/experience

Q10 What factors have negative correlation?

age/education, experience/education

Q11 What factors have strong negative correlation?

experience/education

Q12 What set of two variables has the highest positive Pearson Product-Moment correlation coefficient? What set of two variables has the greatest negative Pearson Product-Moment correlation coefficient?

age/experience. There is strong linear correlation on the scatterplot.

Q13 What set of two variables has the Pearson Product-Moment correlation coefficent that is closest to zero? Would you be sure that the two variables are not related at all? What would you do to check?

experience/wage. There is no strong linear correalation on the scatterplot.

Q14 Hide the messages, the code and its results on the webpage.

Q15 Display the title and your name correctly at the top of the webpage.

Q16 Use the correct slug.