9.4 Choosing a Data Display Notes

Learning Objective: Choose and construct an appropriate data display

Example 1: Choose an appropriate data display for the situation.  Explain your reasoning.

a) the number of students in a marching band each year

b) a comparison of people's shoe size and their heights

Example 2: You record the number of hits for your school's new website for 5 months.  Tell whether the data display is appropriate for representing how the number of hits changes during the 5 months.  Explain your reasoning.

a)

b)

c)

Example 3: Which line graph is misleading?  Explain.

Example 4: A volunteer concludes that the number of cans of food and boxes of food donated were about the same.  Is this conclusion accurate?  Explain.

9.4 Practice Problems:

Choose an appropriate data display for the situation.  Explain.

1) the population of the United States divided into age groups

2) the percents of students in your school who play basketball, football, soccer, or lacrosse

3) Would a dot plot be an appropriate data display for the data in example 2?

4) Explain why the data display is misleading.