14 terms

Unit 7 vocab

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Terms in this set (...)

Mean
The average; (How to find it?? Add up all numbers,
then divide by how many there are)
Median
The middle number in a data set (How to find it??
Order data from least to greatest, then find middle
number)
Mode
The value or values that occur most often in a data set.
Range
The difference of the least number and the greatest
number in data set. (How to find it?? Subtract smallest
number from biggest number)
Outlier
A value that is much greater than or much less than
the other values in a data set. IT WILL STAND OUT!
Measures of
Center
A single number that describes the middle of the data
set. Measures of center are Mean and Median!
Dot Plot
A data graph in which each data item is shown as a
dot above a number line.
Histogram
A bar graph that shows the frequency of data within
equal intervals.
Frequency
A measure of how many times an event occurs.
Box & Whisker
Plot
A graph that shows the least and greatest values, first
and third quartiles and median of a data set. It
measures variation of data.
Inter-Quartile
Range
The difference of the first and third quartiles in a data
set. (How to find it?? Subtract the 3rd and 1st quartiles)
First Quartile
The median of the lower half of a data set.
Third Quartile
The median of the upper half of a data set.
Measures of
Variability
A single number that describes how spread out or how
clustered a set of data is