| title: “8.1 Correlation plots” |
| author: “Joaquin German” |
| date: “10/8/2019” |
| output: html_document |
| editor_options: |
| chunk_output_type: console |
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?
Fireplace and the price of the house has a positive. The connection is only moderate to weak because it is only 0.38. So houses with fireplaces do cost more but not alot more.
Q2 What factors have strong positve correlation with home price?
The factor that has the strongest correlation with home price is the living area. This is a strong correlation because it is 0.71. This means that the price increases with a larger living area.
Q3 What factors have negative correlation with home price?
The one factor that has a negative correlation with home price is age. There is no correlation between age and home price because it is -0.19
Q4 What factors have strong negative correlation with home price?
There are no STRONG negative correlations with home price.
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?
The living area and number of rooms has the highest correlation with a 0.73. This is a strong connection
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?
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.
1. The factors that have a positive relationship is experience, age, and education 2. There is no factor with a strong correlation only moderate correlation 3. There is no negative relationship 4. There is no strong negative relationship ## 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.