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)...
View Full Document
- Spring '08
- Statistics, Bar chart, GAS PRICES, Histogram