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Unformatted text preview: : data collected over the same period (ex: each week, the same day, gas prices) Population : entire group you are interested in. Size of the population is denoted by N Sample : a subset of the population that is representative of the population of interest Graphical Summaries: For qualitative data: pie chart and bar graph o Frequency Distribution: shows the number of data values in each of several non-overlapping classes o Relative Frequency Distribution: proportion of items belonging to a class RF = (frequency) / (# of values)...
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- Spring '08