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# Box and Dot Plots

Box-and-Whisker A diagram or graph using a number line to show the distribution of a set of data. The diagram displays the median, upper and lower quartiles, and the maximum and minimum values of the data.
Central Tendency Refers to the average of a data set, includes mean, median and mode.
Data Distribution Takes into account the range and spread of a data set. It describes the shape of a data set when displayed on a histogram or dot plot.
Dot Plot A number line long enough to encompass all numbers in a sample, showing a dot over the position corresponding to each number.
Interquartile Range A measure of spread equal to the upper quartile (Q3) minus the lower quartile (Q1) in a data set.
Lower Quartile Range Quartile 1 (Q1) is the median of the lower half of the values.
Maximum Value Highest or greatest amount or value.
Mean The total of all the scores or amounts, divided by, how many scores or amounts there were.
Median A type of average which is the middle value of an ordered set of data values.
Minimum Value Smallest or least amount or value.
Outlier A value far away from most of the rest in a set of data.
Range The difference between the lowest and highest values in a data set.
Skewed Distribution The distribution of negatively skewed data tails off to the left towards the minimum value. The distribution of positively skewed data tails off to the right towards the maximum value.
Upper Quartile Quartile 3 (Q3) is the median of the upper half of the values.
Created by: Mrs.Cook