Question

question 18 of 25
for which purpose would you most likely use a bar graph?

a. to show how many paper and plastic bags are used by the people
of one city over several years

b. to show how many people in one city prefer paper bags and how
many prefer plastic bags

c. to show what percentage of people in one city prefer paper bags
to plastic bags

d. to show the relationship between paper or plastic bag preference
and a person’s city

Explanation:

• Option A: A line graph is better for showing changes over time (years), so a bar graph isn't the best here.
• Option B: A bar graph is ideal for comparing the number of people who prefer two different categories (paper bags vs plastic bags) as it can clearly display the quantities for each category.
• Option C: A pie chart is more suitable for showing percentages of a whole (what percentage prefer paper vs plastic), as it shows proportions.
• Option D: A scatter plot or a two - way table (or other methods) would be better for showing the relationship between two variables (preference and city), while a bar graph is not the primary choice for showing relationships.

Answer:

B. To show how many people in one city prefer paper bags and how many prefer plastic bags