frequency distribution A tabular summary chart of data, showing how frequently each of the various observations occurs in each category or class relative frequency A ratio that compares the frequency of each category to the total number of categories (multiply by 100 to get relative frequency percentage) What is the purpose of a frequency distribution table? To help us understand the data numerically by showing the frequency distribution and relative percentage What is the difference between a column chart and a bar chart? In a column chart, the rectangular shapes representing each category are displayed vertically and lined up on the x-axis of the chart. The y-axis represents the frequency. The bar chart is the same as the column chart except the axis are transposed. How does a pie chart visualize data? The wedges are easily seen to represent the individual classes of data with their respective proportions while the whole pie represents the total (n). What are the 3 steps to summarize quantitative data in a frequency distribution table? 1) Determine the # of classes to be evaluated (consider the # of items in the data set & the range of the data) 2) Determi