
Measures of Dispersion
Flashcard
•
Mathematics
•
University
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the range in statistics?
Back
The range is the difference between the highest and lowest values in a data set.
2.
FLASHCARD QUESTION
Front
What does the Empirical Rule state about standard deviations?
Back
The Empirical Rule states that approximately 95% of the observations in a normal distribution lie within plus and minus two standard deviations of the mean.
3.
FLASHCARD QUESTION
Front
What is the standard deviation?
Back
The standard deviation is a measure of the amount of variation or dispersion in a set of values, defined as the square root of the variance.
4.
FLASHCARD QUESTION
Front
Can two data sets with the same mean have different standard deviations?
Back
Yes, two data sets can have the same mean but different standard deviations, indicating different levels of dispersion.
5.
FLASHCARD QUESTION
Front
Which measure of location is used to compute the variance?
Back
The mean is used to compute the variance of a distribution.
6.
FLASHCARD QUESTION
Front
What is variance in statistics?
Back
Variance is a measure of how far a set of numbers are spread out from their average value.
7.
FLASHCARD QUESTION
Front
How is the coefficient of variation calculated?
Back
The coefficient of variation is calculated as the ratio of the standard deviation to the mean, often expressed as a percentage.
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