Studentexam marks(out of 100) and the number of classes theymissedin the trimester were recorded for a subject.Excel was used to investigate the potential linear relationship between these two variables.A section of the summary output is provided below:

Regression statistics

Multiple R 0.46

R square 0.21

Observations 44

Coefficients Standard Error

Intercept 86.96 8.85

Classes missed -6.33 2.89

What is the correlation coefficient?

Give your answer correct to two decimal places.Do NOT include units.Do NOT give a percentage.