1. How do you install a package in R environment? Write the R command as an example. You may use any package of your choice to demonstrate the installation of a package.

2. How do you call a package within your current R session? You may use any installed package of your choice to demonstrate this.

3. How do you load data from an excel file (with xlsx or csv extension) in R environment? Demonstrate by using any excel file on your local computer and loading it into the R environment.

4. Plot a scatter plot with numerical or quantitative variable on the y-axis and categorical or qualitative variable on the x-axis. You may use any dataset within the R environment. You must use the ggplot function from the ggplot2 package. Why such a plot with categorical variable on the x-axis and quantitative variable on the y-axis are not very useful. Which plot is used to plot categorical variable on the x-axis and numerical variable on the y-axis?

5. Now plot a scatter plot with numerical or quantitative variable on both the x-axis as well as the y-axis. You may use any dataset within the R environment. You must use the ggplot function from the ggplot2 package.

6. Plot a simple line graph using any dataset available within the R environment. You must use the ggplot function from the ggplot2 package.

7. Which plot is used to plot a bell curve or normal curve? Plot a bell curve or normal curve using any dataset present within the R environment. You must use the ggplot function from the ggplot2 package. 8. Write the R code to create the following boxplot for the mpg dataset. This dataset is available within the R environment:

Now interpret the above box plot as to what insights can be drawn from it.

9. Write the R code to create the following bar plot for the mtcars dataset. This dataset is available within the R environment:

10. Write the R code to create the following grouped bar plot for the mpg dataset. This dataset is available within the R environment:

Why there’s no multiple bars for cylinder = 5 in the above bar plot?