Researchers once surveyed college students on their Facebook use. The following two-way table displays data for the sample of students who responded to the survey

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Researchers once surveyed college students on their Facebook use. The following two-way table displays data for the sample of students who responded to the survey. Approximately what percent of students in the sample do not use Facebook? Round your answer to the nearest percent.

AgeUses FacebookDoes not Uses Facebook
18 to 22784
23+7067

Approximately what percent of students in the sample do not use Facebook? Round your answer to the nearest percent.




The number of students who do not use facebook is calculated by counting the total number of students in the row shown in the blue box. We add to find the total number of students in that row to get the total number as 71.

AgeUses FacebookDoes not Uses FacebookTotal
18 to 2278482
23+7067137
Total14871219

The percentage is calculated by dividing 71 with the total number of students which is 219

So, the percentage is `\frac{71}{219}` = 0.3242 `\times` 100 
= 32.4221971
= 0.3242×100
= 32.42%

So, approximately 32% of the sample of students do not use Facebook.

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