# Probability and Statistics

# Bar Graphs and Histograms Exercises

### Example 1

Make a bar graph for the following set of data:

Trianna's bookshelf contains 40 mysteries, 30 science fiction books, 10 non-fiction books, 50 comic books, and 5 dictionaries.

### Example 2

Make a bar graph for the following set of data:

Some kids were surveyed about their favorite flavors of ice cream. The answers were chocolate, chocolate, vanilla, strawberry, vanilla, strawberry, strawberry, vanilla, vanilla, and vanilla. What, have these kids never heard of cookie dough or cake batter? Hey kids...get out more.

### Example 3

Make a bar graph for the following set of data:

Company A makes $100,000 per year. Company B makes $200,000 per year and Company C makes $1,000,000 per year. We'd like a job at Company C, please.

### Example 4

Determine if a bar graph or a histogram should be used to display the data. Explain your answer.

A group of kids were asked for their favorite colors. 10 said red, 5 said orange, 5 said yellow, 1 said green, 15 said blue, and 5 said purple. Let's assume none of them were lying.

### Example 5

Determine if a bar graph or a histogram should be used to display the data. Explain your answer.

Some fish were weighed, and their weights were found to be 6 oz, 6.5 oz, 7 oz, 7.2 oz, 7.3 oz, and 8 oz. Go easy on the 8 oz. one... he's trying to cut back on the algae.

### Example 6

Determine if a bar graph or a histogram should be used to display the data. Explain your answer.

Happy Meals, Co. charges 3 for a happy meal while Fast Food Fishes charges 2 for a happy meal. Don't figure in the money spent in the lawsuit over permissions to use the term "happy meal."