Question
In an area of the Great Plains, records were kept on the relationship between the rainfall...
In an area of the Great Plains, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushels per acre).
| Rainfall | 13 | 11 | 16 | 15 | 21 | 13 | 10 | 18 | 19 |
| Yield | 55 | 49 | 60 | 63 | 85 | 60 | 36 | 80 | 83 |
- Construct a scatter diagram for the data
- Calculate the correlation coefficient
- Determine the association
Homework Answers
Answer #1
Answer---->
A) . Scatter Plot of Rainfall and yield
here , x = rainfall (in Inches )
y= yield ( bushels per acre )
B) correlation coefficient(r) between rainfall and yield :-
Here we use R- software to compute correlation coefficient.
Therefore , correlation coefficient = r = 0.9615188
Association :-
from correlation coefficient between Rainfall and yield we can say that there is strong positive correlation.
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