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Why is it helpful to find the mean of a data set?
It is one of the key measures of a data set: it shows the value around which the observations are spread out.
What value shows how the data set as a whole is spread around the mean?
variance
This shows how the data set as a whole is spread around the mean?
A frequency distribution plot.
Can the median be greater than the 1st quartile in a data set with 1000 values?
The median must be at least as great as the first quartile in any data set. Normally it would be greater.The median must be at least as great as the first quartile in any data set. Normally it would be greater.The median must be at least as great as the first quartile in any data set. Normally it would be greater.The median must be at least as great as the first quartile in any data set. Normally it would be greater.
Could the range ever be greater than the largest number of a data set?
Yes, if the lowest data value is negative.
What Describes how spread out a data set is?
spreadsheet
What does the IQR tell you about a data set?
It gives a measure of the spread of the data.
Which data set has the greatest spread for the middle 50 of its data?
The data set whose inter-quartile range is the largest.
Describes how spread out data set is?
(As in Jeopardy) - What is "standard deviation"?
Why is it helpful to find the mean of a data set?
It is one of the key measures of a data set: it shows the value around which the observations are spread out.
What is meant by the standard deviation of a data set?
It is a measure of the spread of the data around its mean value.
Can the mean be greater than the greatest value in a data set?
No.
What does the mean absolute deviation tell you about a set of data?
It is a measure of the spread or dispersion of the data.
What does the median of a set of data tell you?
The median is the midpoint of the data set. So half the observations are greater than the median and half are smaller.
Show how the data set as a whole is spread around the mean?
I think the answer is variance
What does a large MAD tell you about a set of data?
It gives a measure of the spread of the data.you
What value shows how the data set as a whole is spread around the mean?
variance
