This assignment will work with the dataset contribution.csv$,$ which is uploaded under the

Week $2$ module on Canvas. This dataset summarizes the contributions received by a selective

private liberal arts college in the Midwest. The college has a large endowment and, as all private

colleges do$,$ keeps detailed records on alumni donations. Here we analyze the contributions of five

graduating classes $($the cohorts who have graduated in $1957,1967,1977,1987,$ and $1997).$ The data

set consists of $n=1230$ living alumni and contains their contributions for the years $2000-2004.$ In

addition, the data set includes several other variables such as gender, marital status, college major,

subsequent graduate work, and attendance at fund$-$raising events, all variables that may play an

important role in assessing the success of future capital campaigns.

Call the necessary libraries by envoking the following commands.

library$($lattice$)$

library$($ ellipse$)$

Read the file contribution.csv into the variable don by using the read.csv function. An

example using the instructor's working directory is shown below. You will have to change the

directory to your own location in order to successfully read the file.

don read.csv$("$C:$/$Users$/$sp$2957/$Documents$/$NJIT$/$Teaching$/$contribution$.$csv$")$

Use the following command to take a look at the dataset. List all the names of the variables

in the dataset.

$,$

Using the table function, create a table summarizing the frequency of the data with respect

to the variable Class.Year. Use this table and the barchart function to create a vertical

barchart showing the number of alumni with respect to graduating years.

The current dataset contains information on alumni donations for years $1957,1967,1977,$

$1987$ and $1997.$ Compute the total donation amount for each alumni and store it into a new

variable $($don$TGiving$).$ What is the mean and standard$-$deviation of the total donation?