1. Quiz # 5 (A)
1. What are the differences between correlation and regression?
2. Give examples of the following:
a) Regression
b) Positive correlation
c) Negative correlation
d) Zero correlation
3. Interpret the following results :
a) r = 0.79 b) r = -0.65 c) r = 0.34 d) r = -0.18
4. Let X=fertilizer, Y=production of rice.
X Y
1 2
2 5
3 8
a) Find the correlation coefficient, r.
b) Interpret the result.
c) Fit a regression line between X and Y.
d) Interpret the result.
e) When X=10, what will be the value of Y?
Md. Mortuza Ahmmed