Chapter 3: Q 3.59. (page 113)
Why you use the standard deviation as a measure of variation. What is the reference point.
When using the standard deviation as a measure of variation, the mean of the data set serves as the reference point.
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We have provided simple data set for you to practices the basics of finding measures of center. For each data set determine the:
a) Mean
b)Median
c) Mode.
The given data set is:.
A quantitative data set of size has mean and standard deviation . At least how many observation lie between and
A quantitative data set has mean and standard deviation .Fill in the following blanks:
(a)At least of the observation lie between ____ and____ .
(b)At least____ of the observation lie betweenand.
The data set has observations and has mean and standard deviation . Approximately how many observations lie between and .
Define
a. descriptive measures,
b. measures of center,
c. measures of variation.
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