Devry MATH221 Week 2 LAB Latest 2019 JULY Question # 00603524 Course Code : MATH221 Subject: Mathematics Due on: 08/08/2019 Posted On: 08/08/2019 11:15 AM Tutorials: 1 Rating: 4.5/5

MATH221 Statistics for Decision Making

Week 2 LAB

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 histogram for the variable
Height. 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 Height 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.

3. Create
a scatter plot with the variables of height and money. Copy the height 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.

Calculating
Descriptive Statistics

4. Calculate descriptive statistics for
the variable Height by Gender. Sort the
data by gender by clicking on Data and then Sort. Copy the heights of the males form the data
file into the Descriptive Statistics worksheet of the week 1 Excel file. Type the standard deviations below. These are
sample data. Then from the data file, copy and paste the female data into the
Descriptive Statistics workbook and do the same

	Mean	Standard deviation
Females
Males

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 histogram
created for the heights of students in this class (include the shape)? Explain
your answer.

7. What is seen in the scatter plot for
the height and money variables? Explain your answer.

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

9. Compare the standard deviation for
the heights of males and the standard deviation for the heights 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 heights should be between what two values? Either show work or explain
how your answer was calculated.

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