BA2300 Ch.2 P2

crosstabulation

tabular summary of data for two variables

when can crosstabulation be used

one variable is categorical and the other is quantitative,
both variables are categorical, or both variables are quantitative

scatter diagram

a graphical presentation of the relationship between two quantitative variables

one variable is shown on the horizontal axis and the other variable is shown on the vertical axis

the general pattern of the plotted points suggests the overall relationship between the variables

trendline

provides an approximation of the relationship

side-by-side bar chart

graphical display for depicting multiple bar charts on the same display

each cluster of bars represents one value of the first variable

each bar within a cluster represents one value of the second variable

stacked bar chart

another way to display and compare two variables on the same display

it is a bar chart in which each bar is broken into rectangular segments of a different color

data visualization

describes the use of graphical displays to summarize and present information about a data set

displays used to show the distribution of data

bar chart to show the frequency distribution or relative frequency distribution for categorical data

pie chart to show the relative frequency or percent frequency for categorical data

dot plot to show the distribution for quantitative data over the entire range of the data

histogram to show the frequency distribution for quantitative data over a set of class intervals

stem-and-leaf display to show both the rank order and shape of the distribution for quantitative data

displays used to make comparisons

side-by-side bar chart to compare two variables

stacked bar chart to compare the relative frequency or percent frequency of two variables

displays used to show relationships

scatter diagram to show the relationship between two quantitative variables

trendline to approximate the relationship of data in a scatter diagram