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Module 17
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Terms in this set (15)
box plot/box and whisker plot
a graph that shows how data are distributed by using the median, quartiles, least value, and greatest value
categorical data
data that consists of non numeric information
dot plot
a visual display in which each piece of data is represented by a dot above a number line
mean
the sum of the items in a set of data divided b the number of items in the set; also called average
median
the middle number or the mean of the two middle numbers in an ordered set of data
mode
the number or numbers that occur the most frequently in a set of data
measure of spread
a measure that describes how far apart the data are distributed`
measure of center
a measure used to describe the middle of a data set. also called the measure of central tendency
range
the difference between the greatest and least values in a data set
relative frequency
the ratio of the number of times an event or data value occurs and the total number of events or data values
histogram
a bar graph that shows the frequency of data with equal intervals
interquartile range (IQR)
the difference of the third (upper) and first (lower) quartiles in a data set, representing the middle half of the data
quartile
three values, one of which is median, that divide a data set into fourths
statistical question
a question that has many different, or variable, answers
outlier
a number that is much greater or much less than the other numbers
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