What is the main goal of the video?

Calculating Variance and Standard Deviation

Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Hard

Thomas White
FREE Resource
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28 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To introduce probability theory
To discuss the history of statistics
To find the variance and standard deviation for a discrete data set
To explain the concept of mean
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the lowercase Sigma symbol represent?
Standard error
Mean of values
Variance and standard deviation
Sum of values
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is variance calculated according to the video?
Sum of squares divided by the number of values
Mean of the squares minus the square of the mean
Square of the mean minus the mean of the squares
Sum of values divided by the number of values
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between standard deviation and variance?
Standard deviation is half the variance
Standard deviation is the square of variance
Standard deviation is the square root of variance
Standard deviation is twice the variance
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for standard deviation?
Half the variance
Twice the variance
Square root of variance
Square of variance
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for standard deviation?
Square of variance
Square root of variance
Twice the variance
Half the variance
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in solving the example problem?
Calculate the mean of the data set
Calculate the standard deviation
Set up a table and list the numbers
Find the sum of the numbers
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