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Unit 10

Data and Statistics

TermDefinition
box plot a graph that measures the spread of the data, including the 5 number summary
center a statistical measure of data, often the mean or median
dot plot a graph that is used to compare frequency
interquartile range a measure of variability between the first and third quartile
median a measure of center, found by ordering the values from least to greatest and determining the middle number
mean a measure of center, found by finding the sum of the data values and dividing by the number of pieces of data
shape describes the type of graph, including symmetric and skewed
spread the range of data
distribution the collection of all the values for the possible answers to a statistical question
mode the data item that occurs the most often
outlier data points that do not follow the overall pattern in the data set
range the difference between the highest and lowest number in a data set
variabiltiy how many different answers there are to a statistical question
histogram a graph of numerical data that shows data distribution
class intervals intervals which contain some of the possible values of the numerical variable
quartiles values that divide the distribution into four groups, each having an equal amount of data
frequency table displays the possible values of the data set along with the frequency or number of times that value occurs
stem plot a graph that displays data according to its place value
percent bar graph a graph that compares the percentages that each item contributes to the whole
Created by: krempinm
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