Calculating and Comparing the Spread of Data Sets: Understanding Standard Deviation

Interactive Video
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Mathematics
•
9th - 10th Grade
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the range of a data set?
The difference between the highest and lowest values
The average of all data points
The sum of all data points
The middle value of the data set
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When is the interquartile range most useful?
For symmetric data
For skewed data
For data with outliers
For small data sets
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the standard deviation tell us about a data set?
The average value of the data set
The highest value in the data set
How spread out the data points are from the mean
The total number of data points
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which formula is used to calculate the standard deviation?
Sum of quartile 3 and quartile 1
Difference between the highest and lowest values
Square root of the sum of squared deviations divided by n minus 1
Sum of all data points divided by the number of data points
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a higher standard deviation indicate about a data set?
The data set is symmetric
The data set has fewer data points
The data points are widely spread out
The data points are closely clustered around the mean
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does Ms. Foxworth's class compare to Mr. Ruiz's class in terms of standard deviation?
Both classes have the same standard deviation
Ms. Foxworth's class has a lower standard deviation
Mr. Ruiz's class has a lower standard deviation
Ms. Foxworth's class has a higher standard deviation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What can be concluded if two data sets have the same mean and range?
The data sets have the same number of data points
The data sets are identical
The data sets have the same standard deviation
The data sets may have different spreads
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