Studentexam marks(out of 100) and the number of classes theyattendedin 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

0.53

R square

0.2809

Observations

45

Coefficients

Standard Error

Intercept

64.11

6.26

Attendance

579

2.05

How many students were sampled?

Answer