Measures of Center & Data Displays
range
the difference between the greatest number and the least number in a set of numbers
median
the middle number of a set of numbers when the numbers are arranged least to greatest, or the mean of the two middle numbers when the set has two middle numbers
mode
the number that occurs most often in a data set
mean
the sum of a set of numbers divided by the number of elements in the set; an average
histogram
a bar graph in which the labels for the bars are numerical intervals
data set
a collection of numbers or values that relate to a particular subject
line plot
a graph that shows the frequency of data along a number line
bar graph
a graph that uses horizontal or vertical bars to display data
dot plot
a graphical display of data using dots
outlier
a value much greater or much less than the others in a data set
average
another term for mean