
Standard Deviation Discrete Probability
Authored by Anthony Clark
Mathematics
11th Grade

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The table represents the probability of guessing correct on a 5 question true-false quiz. Find the mean and the standard deviation.
μ = .4; σ = 7.5
μ = 2.5; σ = 1.1
μ = 3; σ = 1.3
μ = .1; σ = 0
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The table above shows the number of cell phones per household in a small town. Find the standard deviation. Round to the nearest hundredth.
0.80
1.70
1.30
1.00
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Is this a probability distribution?
No
Yes
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The table above shows a television station's advertisement sales. The distribution of sales for one 24-hour day is given. Solve for the standard deviation. Round to the nearest hundredth.
45.81
266.2
16.30
0.20
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Standard deviation describes what characteristic of a set of data?
The number of data values.
The expected data value.
The spread of the data values from the mean.
The range of the data values.
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
It is a number which describes the spread of the distribution.
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
The table above shows the number of cell phones per household in a small town. Find the standard deviation. Round to the nearest tenth.
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