Given the test scores of 10 students in Physics and History, compute the slope of the regression line obtained by treating Physics as the independent variable. The result should be rounded to three decimal places.
The scores to use:
Physics Scores 15 12 8 8 7 7 7 6 5 3
History Scores 10 25 17 11 13 17 20 13 9 15
Slope of a regression line
Where:
- is the slope of the regression line,
- and are the data points,
- and are the means of the -values and -values, respectively,
- is the number of data points.
Output Format
In the text box, enter the floating point/decimal value required. Do not leave any leading or trailing spaces. Your answer may look like: 0.255
This is NOT the actual answer - just the format in which you should provide your answer.