Bar Graphs and Histograms SWBAT make double bar graphs; interpret double bar graphs; make/use frequency table in preparation for constructing a histogram; make and use a histogram

Definitions Double bar graph Histogram Compares two related sets of data Histogram A graph that shows the frequency of equal intervals of data

To create a bar graph Draw a vertical and a horizontal axes on grid paper Choose an appropriate scale for both sets of data Label both axes. Choose colors and create a key Draw a bar for each value of the data Write a title for the graph

Examples Create a bar graph for the following data Favorite T-Shirt Colors Color Girls Boys White 4 7 Red 8 Blue 12 Green 11 6 Yellow

Examples What T-shirt colors are favored by more boys than girls? What T-shirt colors are favored the same by boys and girls?

Examples Create a bar graph for the following data Swimsuit Sales Month Two-piece One-piece April $2,400 $2,100 May $3,200 $4,600 June $5,600 $5,800 July $5,900 $6,000 August $5,100 $4,800

Examples When was the total sale of two-piece and one-piece swimsuits the greatest? When was the total sales the least?

Create a Frequency table and a Histogram Weight of Kennel Dogs (lbs) 37 63 40 77 44 56 35 18 33 24 29 31 26 58 65 72 75 60 31 42 60