n article gave a scatter plot along with the least squares line of x = rainfall volume (m²) and y = runoff volume (mº) for a particular location. The x 5 12 14 19 23 30 40 48 55 67 72 83 96 112 127 y 4 10 13 15 15 25 27 45 38 46 53 72 82 99 102 USE SALT (a) Does a scatter plot of the data support the use of the simple linear regression model? ⒸYes, the scatterplot shows a reasonable linear relationship. O Yes, the scatterplot shows a random scattering with no pattern. O No, the scatterplot shows a reasonable linear relationship. O No, the scatterplot shows a random scattering with no pattern. (b) Calculate point estimates of the slope and intercept of the population regression line. (Round your answers to four decimal places.) slope
n article gave a scatter plot along with the least squares line of x = rainfall volume (m²) and y = runoff volume (mº) for a particular location. The x 5 12 14 19 23 30 40 48 55 67 72 83 96 112 127 y 4 10 13 15 15 25 27 45 38 46 53 72 82 99 102 USE SALT (a) Does a scatter plot of the data support the use of the simple linear regression model? ⒸYes, the scatterplot shows a reasonable linear relationship. O Yes, the scatterplot shows a random scattering with no pattern. O No, the scatterplot shows a reasonable linear relationship. O No, the scatterplot shows a random scattering with no pattern. (b) Calculate point estimates of the slope and intercept of the population regression line. (Round your answers to four decimal places.) slope
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:### Simple Linear Regression and Rainfall Data Analysis
An article provided a scatter plot along with the least squares line of \( x = \) rainfall volume (\(m^3\)) and \( y = \) runoff volume (\(m^3\)) for a specific location. The values given were extracted from the plot.
#### Data Points
- **Rainfall volume (\(x\))**: 5, 12, 14, 19, 23, 30, 40, 48, 55, 67, 72, 83, 96, 112, 127
- **Runoff volume (\(y\))**: 4, 10, 13, 15, 15, 25, 27, 45, 38, 65, 72, 82, 99, 102
#### Questions and Analysis
1. **Scatter Plot Analysis**
*(a)* Does a scatter plot of the data support the use of the simple linear regression model?
- Yes, the scatterplot shows a reasonable linear relationship.
- Yes, the scatterplot shows a random scattering with no pattern.
- **No, the scatterplot shows a random scattering with no pattern.**
- No, the scatterplot shows a reasonable linear relationship.
2. **Estimation of Slope and Intercept**
Calculate point estimates of the slope and intercept of the population regression line. (Round your answers to four decimal places.)
- **Slope**: \_\_\_\_\_
- **Intercept**: \_\_\_\_\_
3. **Runoff Volume Prediction**
Calculate a point estimate of the true average runoff volume when rainfall volume is 47. (Round your answer to four decimal places.)
- Estimated Runoff Volume: \_\_\_\_\_ \(m^3\)
4. **Standard Deviation Estimate**
Calculate a point estimate of the standard deviation \(\sigma\). (Round your answer to two decimal places.)
- Standard Deviation: \_\_\_\_\_
5. **Proportion of Variance Explained**
What proportion of the observed variation in runoff volume can be attributed to the simple linear regression relationship between runoff and rainfall? (Round your answer to four decimal places.)
- Proportion of Variance: \_\_\_\_\_
### Explanation of the Graph
The scatter plot, not provided here
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