Summarise quantitative data by a typical value (a measure of location, such as the mean, median, or mode) and a measure of how well the typical value represents the list (a measure of spread, such as the range, inter-quartile range, or standard deviation).
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Stem and Leaf Plot
Stem-and-leaf plots are a method for showing the frequency with which certain classes of values occur. You could make a frequency distribution table or a histogram for the values, or you can use a stem-and-leaf plot.
Suppose you have the following list of values: 12, 13, 21, 27, 33, 34, 35, 37, 40, 40, 41.
1. Make a histogram 2. Make a Stem and Leaf plot
Complete a stem-and-leaf plot for the following list of grades on a recent test:73, 42, 67, 78, 99, 84, 91, 82, 86, 94