Facebook remains the top choice of social media over all ages, with 65% using Facebook most often among those using social media sites. However, more visually oriented social networks such as Snapchat and Instagram continue to draw in younger audiences. When asked "Which one social networking site or service do you use most often?" the results in the table show the top sites chosen by Americans aged 12-24 who currently use any social networking site or service.

SocialMediaSite	PercentageWhoUseMostOften
Facebook	43%
Instagram	18%
Snapchat	15%
Twitter	8%
Google+	4%
Pinterest	3%

A) What is the sum of the percentages for these top social media sites? (Enter an exact answer.)

Sum of percentages=

B) What percent of Americans aged 12-24 use other social media sites most often? (Enter an exact answer.)

other social media sites=

C) Would it be correct to display these data in a pie chart?

a. Yes. Pie charts are always appropriate for categorical data.

b. Yes. If you include an "Other" category, a pie chart would be appropriate, as each person is only represented in one category and the categories make up the whole.

c. No. A pie chart would not work for this data as many Americans aged 12-24 use more than one social media site.

d. No. A pie chart is not appropriate for categorical data.