Creating Graphs and Calculating Descriptive Statistics

Pie Chart for Car Color

Creating Graphs

1.Create a pie chart for the variable Car Color: Select the column with the Car variable, including the title of Car Color.  Click on Insert, and then Recommended Charts.  It should show a clustered column and click OK.  Once the chart is shown, right click on the chart (main area) and select Change Chart Type.  Select Pie and OK.  Click on the pie slices, right click Add Data Labels, and select Add Data Callouts.  Add an appropriate title.  Copy and paste the chart here.

2.Create a scatter plot with the variables of Drive and Money.  Copy the Drive variable from the data file and paste it into the x column in the Scatter Plot worksheet of the Week 1 Excel file.  Copy the Money variable from the data file and paste it into the y column.  Copy and paste the scatter plot below.

3.Create a histogram for the variable Drive. You need to create a frequency distribution for the data by hand.  Use 5 classes, find the class width, and then create the classes.  Once you have the classes, count how many data points fall within each class. It may be helpful to sort the data based on the Drive variable first.  Once you have the classes and the frequency counts, put those data into the table in the Freq Distribution worksheet of the Week 1 Excel file.  Copy and paste the graph here. 

Calculating Descriptive Statistics

4.Calculate descriptive statistics for the variable Sleep by Gender.  Sort the data by gender by clicking on Data and then Sort.  Copy the Sleep of the males from the data file into the Descriptive Statistics worksheet of the Week 1 Excel file.  Type the mean and standard deviation below. These are sample data. Then, copy and paste the female data into the Descriptive Statistics workbook and do the same.  Keep three decimal places.

Short Answer Writing Assignment

All answers should be complete sentences. 

5.What is the most common color of car for students who participated in this survey? Explain how you arrived at your answer. 

6.What is seen in the scatter plot for the Drive and Money variables? Explain your answer. 

7.What is seen in the histogram created for the driving distance of students in this class (include the shape)? Explain your answer.  

8.Compare the mean hours of sleep for males and the mean for females in these data. Compare the values and explain what can be concluded based on the numbers.   

9.Compare the standard deviation for the sleep of males and the standard deviation for the sleep of females in the class. Compare the values and explain what can be concluded based on the numbers.  

10.Using the empirical rule, 95% of female sleep amounts should be between what two values? Either show work or explain how your answer was calculated. 

11.Using the empirical rule, 68% of male sleep amounts should be between what two values? Either show work or explain how your answer was calculated.