1. ENGLISH PROFICIENCY AVG IN ALL VALLEJO SCHOOLS
By: Ronnel F
Joshua C
Floyd A

2. Procedure
We chose the # of students in all schools and compared/related the data with their English proficiency test percentage.
We predicted that the graph would have no correlation since there are so many points to graph.

3. 03 - 04 VARIABLES # Sigma x 6.4 Sigma x^2 1.6474 Sigma y 18459
Sigma xy n 24

4. 04 - 05 Variables # Sigma x 6.81 Sigma x^2 2.1273 Sigma y 17844
Sigma xy n 24

5. 03-04 & 04-05 (added together) Variables # Sigma x 13.2 Sigma x^2
3.7747
Sigma y
36303
Sigma y^2
Sigma xy n 48

6. R = ?

8. Conclusion
The graph came out as we thought with no linear correlation.
Our “R” is .197, closest to 0, meaning there is no correlation and no line.
We believe that maybe our numbers for sigma x and/or y are incorrect since we didn’t double check it. We only double checked the finding of “R”