Chapter 2 Section 2: Graphical Displays Of Data Flashcards
Pie chart
Shows how large each category of qualitative data is in relation to the whole; uses relative frequencies to divide the “pie” into wedges
Bar graph
Bars are used to represent the amount of data in the each category; one axis displays the categories of qualitative data and the other axis displays frequencies
Pareto chart
A bar graph with the bars in descending order of frequency; typically used with nominal data
Side-by-side bar graph
A bar graph that compares the same categories for different groups
Stacked bar graph
A bar graph that compares the same categories for different groups
Stacked bar graph
A bar graph that compares the same categories for different groups and shows category totals
Histogram
A bar graph of a frequency distribution of quantitative data; horizontal axis is a number line no space between bars
Frequency histogram
A histogram in which the heights of the bars represent frequencies
Relative frequency histogram
A histogram in which the heights of the of the bars represent relative frequencies in either decimals or percentages also known as an ogive
Frequency polygon
A visual display of the frequency of each class of quantitative data that uses straight lines to connect points plotted above the class midpoints
Ogive
A graph that displays the cumulative frequency of each class of quantitative data by using straight lines connect points plotted above the upper class boundaries
–relative frequency histogram with connected dots
Stem-and-leaf plot
Retains the original data; the leaves are the last significant digit in each data value and the stems are the remaining digits
Dot plot
Retains the original data by plotting a dot above each value on a number line
Line graph
Uses straight lines to connect points plotted at the value of each measurement above the time it was taken
