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Criminal Justice
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Statistical Concepts
Statistical Concepts
Criminal Justice
Quiz 6 :
Curves and Distributions
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Quiz 6 :
Curves and Distributions
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Q01
Q01
Q01
A normal distribution (the theoretical concept)will be:
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D
Q02
Q02
Q02
If a variable is normally distributed,it would have approximately:
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B
Q03
Q03
Q03
The shape of a variable is referred to as its
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D
Q04
Q04
Q04
The peak of a normal curve has
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Q05
Q05
Q05
If a curve is asymptotic,it means that
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Q06
Q06
Q06
Each distribution has at least three important parts.They are
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Q07
Q07
Q07
The approximate percentage of cases between the mean and negative one standard deviation (-1 s)in a normal curve is:
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Q08
Q08
Q08
Two reasons we can be assured that a normal distribution is a reasonable assumption for many variables are:
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Q09
Q09
Q09
One way of determining that a curve may differ from the normal curve is called
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Q10
Q10
Q10
A mean of 10 and a standard deviation of 5 would result in a standard score of
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Q11
Q11
Q11
Which of the following represent the concept of skewness?
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Q12
Q12
Q12
When the normal curve is paired with the standard deviation,a fixed set of point emerges that
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Q13
Q13
Q13
Another name for a normal curve is the unique normal distribution.
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Q14
Q14
Q14
In a normal curve,the lowest probability of a score occurring would be found at the end of the curve.
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Q15
Q15
Q15
A symmetrical curve means that a symbolic measurement has been used.
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Q16
Q16
Q16
If the mean of a distribution is assigned the value of zero,then all scores above the mean would be negative numbers.
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Q17
Q17
Q17
Every type of curve actually represents a probability distribution.
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Q18
Q18
Q18
As long as you have a large enough sample,a random sampling process is not necessary in order to assume a normal curve.
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Q19
Q19
Q19
Scores between the ends and the peak of a normal curve have an increasing probability of occurring as the point on the curve moves toward the peak.
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Q20
Q20
Q20
Z-scores are used to describe the relative position of a mean.
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Q21
Q21
Q21
A uniform distribution has a uniformly increasing number of scores throughout the curve.
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Q22
Q22
Q22
At ±3 s more than 99% of all scores are accounted for.
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