In this exercise you will learn to plot data using the ggplot2 package. To this end, you will make your own note of 4.1 Categorical vs. Categorical from Data Visualization with R.

## Observations: 1,728
## Variables: 16
## $ price           <int> 132500, 181115, 109000, 155000, 86060, 120000, 1…
## $ lotSize         <dbl> 0.09, 0.92, 0.19, 0.41, 0.11, 0.68, 0.40, 1.21, …
## $ age             <int> 42, 0, 133, 13, 0, 31, 33, 23, 36, 4, 123, 1, 13…
## $ landValue       <int> 50000, 22300, 7300, 18700, 15000, 14000, 23300, …
## $ livingArea      <int> 906, 1953, 1944, 1944, 840, 1152, 2752, 1662, 16…
## $ pctCollege      <int> 35, 51, 51, 51, 51, 22, 51, 35, 51, 44, 51, 51, …
## $ bedrooms        <int> 2, 3, 4, 3, 2, 4, 4, 4, 3, 3, 7, 3, 2, 3, 3, 3, …
## $ fireplaces      <int> 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, …
## $ bathrooms       <dbl> 1.0, 2.5, 1.0, 1.5, 1.0, 1.0, 1.5, 1.5, 1.5, 1.5…
## $ rooms           <int> 5, 6, 8, 5, 3, 8, 8, 9, 8, 6, 12, 6, 4, 5, 8, 4,…
## $ heating         <fct> electric, hot water/steam, hot water/steam, hot …
## $ fuel            <fct> electric, gas, gas, gas, gas, gas, oil, oil, ele…
## $ sewer           <fct> septic, septic, public/commercial, septic, publi…
## $ waterfront      <fct> No, No, No, No, No, No, No, No, No, No, No, No, …
## $ newConstruction <fct> No, No, No, No, Yes, No, No, No, No, No, No, No,…
## $ centralAir      <fct> No, No, No, No, Yes, No, No, No, No, No, No, No,…

Q1 Stacked bar chart Plot the relationship between newContruction and heating type.

Q2 What is the most common heating system overall? Discuss your reason.

Hint: See the stacked bar chart you created in the previous question.

The common heating system is hot air heating because it is mostly red.

Q3 Grouped bar chart Plot the relationship between newContruction and heating type.

Q4 Segmented bar chart Plot the relationship between newContruction and heating type.

Q5 In which type of houses (new or old) is the proportion of hot air heating system higher? Discuss your reason.

New constructed houses have a higher proportion of hot air to heating systems. older homes use .55 whereas newer homes is closer to 1.00.

Q6 Rename the construction type as new and old.

Hint: See the code in 4.1.4 Improving the color and labeling.

Q7 Add labels to the axes.

Q8 Hide the messages and the code, but display results of the code from 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.