Graphs

Box - and - Whisker Plot Circle Graph Pictograph Types of Graphs Bar Graphs Plots Line Graphs Histogram Single Stem & Leaf Single Line Double Double Scatter

Pictograph Days of the Week Fireflies More Info

Pictograph All pictographs have a title. Return to Graph Pictograph All pictographs have a title. Rows and columns shape the pictograph. Label each row and column. Use pictures to show the data. Each picture equals a certain amount of data. Pictographs need a key.

Bar Graph More Info

Bar Graph The purpose of a bar graph is to display and compare data. Return to Graph Bar Graph The purpose of a bar graph is to display and compare data. Bar graphs use bars to show the data. A bar graph must include: - a title - labeled X and Y axes - equal intervals are used on the Y axis - the bars are evenly spaced apart from each other

Double Bar Graph More Info

Return to Graph Double Bar Graph The purpose of a double bar graph is to compare two or more sets of data. Uses bars to show the data. Double bar graphs must include: - Title - Labeled X and Y axes - Equal intervals are used on the Y axis - Pairs of bars are equally spaced, but the compared bars are not - Key

Histogram Class Test Scores Frequency Test Scores More Info

Histogram Histograms are used to show the frequency of data. Return to Graph Histograms are used to show the frequency of data. Very similar to bar graphs, but use intervals on the X axis. Bars do touch. Histograms have a title. Histograms have two axes which are labeled.

Line Graph More Info

Line Graph A line graph is used to illustrate change over time. Return to Graph Line Graph A line graph is used to illustrate change over time. Line graphs need: - Title - Labeled X and Y axes - Equal Intervals - Data displayed by points connected into lines

Double Line Graph More Info

Return to Graph Double Line Graph - Equal Intervals - Data displayed by points connected into lines - Key A double line graph is used to compare two groups of related data over time. Double line graphs need: - Title - Labeled X and Y axes

Circle Graph More Info

Return to Graph Circle Graph Circle graphs are used to display parts of the data in relation to the entire amount of data. All circle graphs need a title. Each part is called a sector and is labeled. All angles correct (+2/-2 degrees)

Line Plot More Info Favorite Colors X X X X X X X X X X X X X Red Blue Green Yellow Purple More Info

Return to Graph Line Plot A line plot shows the spread of all the data on a number line. Easily identifies the mode. All line plots include: - a title - a numbered horizontal line - data displayed by use of X’s

Stem and Leaf Plot Student Heights in Centimeters 7 8 8 9 1 2 4 4 4 6 6 0 0 2 3 3 4 7 1 1 More Info Key: 12 7 = 127 cm

Return to Graph Stem and Leaf Plot Stem and leaf plots are used as a quick way of seeing how many pieces of data fall in various ranges. The reader can quickly tell: - the range - the mode Stem and leaf plots have a title, a stem, and leaves A key is used to explain how to read the stem and leaves.

Study Time Versus Grades Scatter Plot Study Time Versus Grades 100 * * * * 80 * * * Grade 60 40 20 1 2 3 4 5 Study Time in Hours More Info

Scatter Plot Shows how closely two sets of data are related Return to Graph Shows how closely two sets of data are related The closer the sets are related, the closer the points come to forming a straight line. Scatter Plots include: - title - labeled axes - equal intervals - corresponding numbers plotted as ordered pairs

Line of Best Fit A line of best fit (or "trend" line) is a straight line that best represents the data on a scatter plot. Direction of data. This line may pass through some of the points, none of the points, or all of the points.

Box - and - Whisker Plot Hours of Homework 5.25 6.9 6.3 5 7.75 3 4 5 6 8 9 More Info

Box - and - Whisker Plot - Labeled intervals Return to Graph Box - and - Whisker Plot - Labeled intervals - Box between lower and upper quartiles - Whiskers from quartiles to extremes - Median, quartiles and whiskers labeled Displays large set of data. Gives general idea of how data clusters. Graph includes: - Title

Key Words Mean – average or central tend Median – the number halfway into a set of ordered numbers Mode – number that occurs the most Range – difference between the lowest and the highest value Long-term data collection - the process of gathering and measuring information over an extended time