Question
A statistician investigating the relationship between the amount of precipitation (in inches) and the number of...
A statistician investigating the relationship between the amount of precipitation (in inches) and the number of automobile accidents gathered data for 10 randomly selected days. The results:
|
Day |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
|
Precipitation(X) |
0.05 |
0.12 |
0.05 |
0.08 |
0.10 |
0.35 |
0.15 |
0.30 |
0.10 |
0.20 |
|
Number of Accidents(Y) |
5 |
6 |
2 |
4 |
8 |
14 |
7 |
13 |
7 |
10 |
You have calculated some of the necessary summary information to carry out the analyses as follows:
- Compute the correlation coefficient for these sample data.
- Draw the scatter plot
- Estimate the best fit of equation.
Homework Answers
Answer #1
From the given data,
i) correlation coefficient:
correlation coefficienr r=0.945
ii) scatter plot:
iii) Regression equation:
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