21 Online social networking In April 2011 the Pew Internet

21. Online social networking - In April 2011, the Pew Internet and American Life Project surveyed 799 teenagers aged 12 to 17. Among the study\'s findings, 93% of teen social media users have a Face book account compared to only 24% who have a MySpace account. What does it mean to say that the difference in proportion is \"significant\"?

Solution

To say that \"the difference in proportions is significant\" means that if there was actually no difference, observing this difference is unlikely to happen.

In that case, we find it hard to believe that there was no difference, so we say \"the difference is significant.\"