MATH 302 Week 2 STATISTICS TEST Part 1 of 8 - Measures of the Spread of Data Questions with Answers

Week 2 Test
Part 1 of 8 - Measures of the Spread of Data Questions 3.0/ 3.0 Points

Question 1 of 20
1.0/ 1.0 Points

FTES data.xlsx 8 KB
The population FTES for 2005–2006 through 2010–2011 was given in an updated report. The
data are reported here.
See Attached Excel for Data.

Calculate the Variance. Round to two decimal places.

Variance: 27901.07

Answer Key: 27901.07
Feedback: use =VAR.S( ) function in Excel.

Question 2 of 20
1.0/ 1.0 Points

A sample of 8 cats found the following weights in kg. What is the variance?

See Attached Excel for Data.


cat weight data.xlsx 8 KB
A. 0.104

B. 0.295

C. 0.087

D. 0.9

E. 0.076

Answer Key: C
Feedback: use =VAR.S function in Excel


Question 3 of 20
1.0/ 1.0 Points

, FTES data.xlsx 8 KB
The population FTES for 2005–2006 through 2010–2011 was given in an updated report. The
data are reported here.


See Attached Excel for Data.

Calculate the median. Round to one decimal place.

Median: 1814.5

Answer Key: 1814.5
Feedback: use =MEDIAN function in Excel




Part 2 of 8 - Box Plot Questions 2.0/ 2.0 Points

Question 4 of 20
1.0/ 1.0 Points
For a boxplot, the box itself represents what percent of the observations?
A. middle 50%

B. 100%

C. lower 25%

D. upper 75%

Answer Key: A
Feedback: The box is the middle 50% and then 25% on either side of the box. 25% + 50% +
25% = 100%

Question 5 of 20
1.0/ 1.0 Points

A survey was conducted of 130 purchasers of new BMW 3 series cars, 130 purchasers of new
BMW 5 series cars, and 130 purchasers of new BMW 7 series cars. In it, people were asked the
age they were when they purchased their car. The following box plots display the results. Which
group is most likely to have an outlier?