Can you relate? Correlation and simple linear regression - Improving the User Experience through Practical Data Analytics - page 219

FIGURE 9.10
Behemoth.com data in Excel.
Our output is in Figure 9.12 .
We can see that the correlation coeficient is +0.449 (the “+” sign is no surprise!).
What this tells us is that a higher sense of usefulness of Boolean search capability
is associated with an increased likelihood of adoption of the search engine. (If we
performed this using SPSS, we would ind that the p -value of r is 0.000 to 3 dig-
its [actually, for those who care: 0.000000000247] and is thus highly statistically
signiicant.)
Furthermore, we can say that the responder's opinion about the usefulness
of the ability to perform a Boolean search, by itself, explains slightly over 20%