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 strong positve correlation with home price?

Bedrooms and living area have a strong positive correlation with home price.

Q2 Continued from Q1: Does the strong correlation mean the variable causes home price to go up and down?

No because we would not know the context of the correlation

Q3 Continued from Q1: Do you think there is a confounding variable?

Age is the confounding variable

Q4 What factors have strong negative correlation with home price?

there is no factor with negative correlation to home price

Q5 What factors have little correlation with home price?

The percent graduated from the neighborhood and lot size

Q6 Simply based on the correlation coefficient, would you be sure that there is no relation at all? What would you do to check?

I would not be so sure, you can check using a scatterplot

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

Hint: The CPS85 data set is from the mosaicData package. Explain wage instead of home price.

Q8 Hide the messages, the code and its results on the webpage.

Hint: Use message, echo and results in the chunk options. Refer to the RMarkdown Reference Guide.

Q9 Display the title and your name correctly at the top of the webpage.

Q10 Use the correct slug.