Standard Deviation and Spread
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Anthony Clark
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Apply the formula for standard deviation to find the result for the sample data: 7, 9, 11, 13, 15
4.5
10.2
6.8
2.236
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use the sample data: 3, 5, 7, 9, 11 to calculate the standard deviation.
8.91
6.72
4.56
2.83
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Analyze the spread of data with a standard deviation of 6 and a mean of 25.
The spread of data is within 12 units of the mean of 25.
The spread of data is within 6 units of the mean of 25.
The spread of data is within 3 units of the mean of 25.
The spread of data is within 8 units of the mean of 25.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Apply the formula for standard deviation to find the result for the sample data: 12, 14, 16, 18, 20
3.16
25
7.5
10
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the standard deviation on this Normal Curve?
6
12
34
18
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The table below shows the area of several states.
Delaware has an area of 2,000 square miles. Which is true if Delaware is included in the data set?
The mean increase
The range decreases
The interquartile range decreases
The standard deviation increases
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The following symbol represents what?
the sample mean
the population mean
the sample standard deviation
the population standard deviation
the sample size
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