## Web Activities

Click on the following links. Please note these will open in a new window.

**Calculate compute the correlation coefficient** **and scatter plot**

Go to this website: http://www.socscistatistics.com/tests/pearson/Default2.aspx

In Chapter 13, as a class, you computed the correlation between extraversion and status striving with the above calculator. Report the correlation here ______.

# Web Activities

Click on the following links. Please note these will open in a new window.

**Calculate compute the correlation coefficient** **and scatter plot**

Go to this website: http://www.socscistatistics.com/tests/pearson/Default2.aspx

In Chapter 13, as a class, you computed the correlation between extraversion and status striving with the above calculator. Report the correlation here ______.

Now, using the same data and correlation coefficient calculator: compute the approximate 95% confidence interval around the correlation coefficient. Next, for the confidence intervals you just computed, test H_{0}: *r* = 0 against the alternative hypothesis H_{1}: *r* ≠ 0, assuming α = .05.

**Calculate compute the correlation coefficient** **and scatter plot**

Go to this website: http://www.socscistatistics.com/tests/pearson/Default2.aspx

In Chapter 13, as a class, you computed the correlation between extraversions and life satisfaction with the above calculator. Report the correlation here ______.

Now, using the same data and correlation coefficient calculator: compute the approximate 95% confidence interval around the correlation coefficient. Next, for the confidence intervals you just computed, test H_{0}: *r* = 0 against the alternative hypothesis H_{1}: *r* ≠ 0, assuming α = .05.

**Think of a simple question that you can post on social media to determine if you network differs from the general population**

Go to this website: http://www.socscistatistics.com/tests/pearson/Default2.aspx

Using that simple question you asked your friends through social media back in Chapter 13, compute the approximate 95% confidence interval around the correlation coefficient. Next, for the confidence intervals you just computed, test H_{0}: *r* = 0 against the alternative hypothesis H_{1}: *r* ≠ 0, assuming α = .05.