Patient Age (years) BMI (kg/m2) 1 65 28 2 53 22 3 22 27 4 64 29 32 27 50 28 7 42 29 8 34 24 23 19 10 43 17 11 21 29 12 12 22

HAND COMPUTATION STEP BY STEP

CORRELATION:

Research Question: Is there a relationship between age and BMI?

Compute for the following if the alpha is at .05 level, 2 tail

1. What is null hypothesis?

2. What is the alternative hypothesis?

3. What is the correlation coefficient (r)?

4. What is the degrees of freedom (df = N-2)?

5. What is the critical value of r?

6. What is the value of r^2 (coefficient of determination)?

7. What is your decision (reject Ho or retain Ho)?

Extracted text: Patient Age (years) BMI (kg/m2) 1 65 28 2 53 22 3 22 27 4 64 29 32 27 50 28 7 42 29 8 34 24 23 19 10 43 17 11 21 29 12 12 22