Math 6: Bar Graphs vs. Histograms Notes Name________________________
When we make graphs, we are creating a picture of organized data. Let’s compare bar graphs and histograms.
Example 1 BAR GRAPH
The following votes came in for class president:
John Lucy John Terry John Terry Lucy John Lucy Terry Terry Lucy Terry Tracy
John Lucy Lucy Bill John Terry Lucy John John Lucy Tracy Terry Lucy Tracy
Make a frequency table to organize the voting data:
Let’s make a graph to show the comparisons among the candidates:
Example 2 HISTOGRAM
Here are the number of wins for 29 professional basketball teams from last season:
25 40 56 43 44 36 32 50 56 47 46 17 52 51 53
15 45 47 50 23 30 41 26 55 19 53 31 48 58
Make a frequency table to organize the wins:
Let’s make a graph to show the comparisons among the amounts of wins:
Bar graph bars do not touch
because the data is categorical
Making Histograms HW: Make a frequency table and then a histogram for each set of data. Include labels and titles:
1.
2.
3. One would use a histogram when the data is organized into ____________________.
4. Bar graphs show _________________data.