Standard Deviation and Variance
Quiz
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Easy
Barbara White
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the standard deviation of the discrete random variable if the variance is 1.56?
1.25
1.30
1.35
1.40
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What does this symbol represent?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does this symbol represent?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the variance if the standard deviation is 1?
1
2
3
4
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
If the standard deviation of a data set is 4, what is the variance?
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Find the variance of the probability distribution of the random variable X which can take only the values 0, 1, 2, 3, and 4 given that P(0) = 1/10, P(1) = 2/10, P(2) = 3/10, P(3) = 2/10 and P(4) = 2/10.
1.54
1.56
1.58
1.60
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.
12, 10, 10, 10, 13, 12, 11, 13, 10
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