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Week 2 Knowledge Check Homework Practice Questions
Week 2 Knowledge Check Homework Practice Questions
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Part 1 of 8 - Measures of the Spread of Data Knowledge Check Homework
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Question 1 of 20
Cholesterol levels were collected from patients two days after they had a heart attack (Ryan, Joiner & Ryan, Jr, 1985).Find the standard deviation.See Attached Excel for Data.
cholesterol data.xlsx
8 KB
A. 45.76
!
B. 47.71
C. 2195
D. 46.85
E. 9.02
F. 2276.29
Answer Key:
Answer Key:
B
Feedback:
Feedback:
use =STDEV.S function in Excel.
Question 2 of 20
Suppose that a manager wants to test two new training programs. They randomly select 5 people for each training type
and measure the time it takes to complete a task after the training. The times for both trainings are in the attached Excel file. Which
training method is more variable?
training data.xlsx
8 KB
MATH302 B008 Sum 20
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Tests & Quizzes
Tests & Quizzes
Tests & Quizzes

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!
A. Training 1B. Training 2C. They have the same mean so the variability is the same.Answer Key: Answer Key:
A
Feedback:
Feedback:
Training 1 because the SD and Variance are bigger.
Question 3 of 20FTES data.xlsx8 KBThe population FTES for 2005–2006 through 2010–2011 was given in an updated report. The data are reported here.See Attached Excel for Data.Mean: !1810.7Calculate the mean. Round to one decimal place.
Feedback:
Feedback:
use =AVERAGE function in Excel
Part 2 of 8 - Box Plot Knowledge Check Homework Practice
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Question 4 of 20The length of the box in the boxplot portrays the
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C. interquartile range
D. mean
Answer Key:
Answer Key:
C
Feedback:
Feedback:
IQR = Q3 - Q1
Question 5 of 20
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