Bar Graphs and Bar Graphs and HistogramsHistograms
SWBAT make double bar graphs; interpret SWBAT make double bar graphs; interpret double bar graphs; make/use frequency table double bar graphs; make/use frequency table in preparation for constructing a histogram; in preparation for constructing a histogram;
make and use a histogrammake and use a histogram
DefinitionsDefinitions
Double bar graph Double bar graph Compares two related sets of dataCompares two related sets of data
HistogramHistogram A graph that shows the frequency of equal A graph that shows the frequency of equal
intervals of dataintervals of data
To create a bar graphTo create a bar graph
Draw a Draw a verticalvertical and a and a horizontalhorizontal axes on axes on grid papergrid paper
Choose an appropriate Choose an appropriate scalescale for both sets for both sets of dataof data
LabelLabel both axes. both axes.
Choose Choose colorscolors and create a and create a keykey
Draw a Draw a barbar for each value of the data for each value of the data
Write a Write a titletitle for the graph for the graph
ExamplesExamples
Create a bar graph for the following dataCreate a bar graph for the following data
Favorite T-Shirt ColorsFavorite T-Shirt Colors
ColorColor GirlsGirls BoysBoys
WhiteWhite 44 77
RedRed 88 88
BlueBlue 1212 88
GreenGreen 1111 66
YellowYellow 77 1111
ExamplesExamples
What T-shirt colors are favored by more What T-shirt colors are favored by more boys than girls?boys than girls?
What T-shirt colors are favored the same What T-shirt colors are favored the same by boys and girls?by boys and girls?
ExamplesExamples
Create a bar graph for the following dataCreate a bar graph for the following data
Swimsuit SalesSwimsuit Sales
MonthMonth Two-pieceTwo-piece One-pieceOne-piece
AprilApril $2,400$2,400 $2,100$2,100
MayMay $3,200 $3,200 $4,600$4,600
JuneJune $5,600$5,600 $5,800$5,800
JulyJuly $5,900$5,900 $6,000$6,000
AugustAugust $5,100$5,100 $4,800$4,800
ExamplesExamples
When was the total sale of two-piece and When was the total sale of two-piece and one-piece swimsuits the greatest?one-piece swimsuits the greatest?
When was the total sales the least?When was the total sales the least?
Create a Frequency table and a Create a Frequency table and a Histogram Histogram
Weight of Kennel Dogs (lbs)Weight of Kennel Dogs (lbs)37 63 40 77 44 56 35 18 33 24 29 37 63 40 77 44 56 35 18 33 24 29
31 26 58 65 72 75 60 31 42 6031 26 58 65 72 75 60 31 42 60