Histograms, box-plots, and measures of central tendency
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| frequency | an interval made up of data values in that interval
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| frequency table | a table that groups a set of data values into intervals and shows the frequency for each interval
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| histogram | a graph that can display data from a frequency table
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| cumulative frequency table | a table that shows the number of data values that lie in or below a given interval
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| symmetric | describes a graph consisting of two parts that are congruent to each other
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| skewed left(negative)/skewed right (positive) | distributions with fewer observations on the left/right
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| bell-shaped | when the graph of a data set creates a symmetric bell-shape
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| uniform | when the observations in a set of data are equally spread across the range of the distribution
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| unimodal/bimodal | distributions with one clear peak/two clear peaks
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| gap | areas of a distribution where there are no observations
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| outlier | an extreme value that differs greatly from the other observations
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| measures of central tendency | measurements that summarize a data set
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| mean | the sum of the data values divided by the total number of data values (the average)
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| median | the middle value in a data set when the values are arranged in order
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| mode | the data item that occurs most times
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| measure of dispersion | a measurement that describes how spread out the values in a data set are
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| range | the difference between the greatest and least values
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| quartiles | values that divide into four equal parts
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| interquartile range | the difference between the third and first quartiles
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| box-and-whisker plot | a graph that summarizes a set of data by displaying it along a number line
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
arouson
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