What is the predicted response value?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
![### Regression Analysis on Bivariate Data
This section of the educational website will walk you through performing a regression analysis on a given set of bivariate data, with the response variable denoted as \( y \).
#### Data Set
The table below displays the bivariate data with variables \( x \) and \( y \):
| \( x \) | \( y \) |
|---------|---------|
| 67.7 | -25.7 |
| 72.5 | -5 |
| 55.8 | 21.3 |
| 64.1 | 11 |
| 70.9 | 64.9 |
| 61.6 | -25 |
| 65.5 | 28.7 |
| 73.6 | 84.6 |
| 68.1 | 15 |
| 70.1 | 75.3 |
| 72.4 | 84.4 |
| 56.1 | 92 |
| 55 | -5.4 |
| 72.5 | 16.5 |
| 72 | 38.7 |
| 64 | 38.7 |
| 70.8 | -15.7 |
#### Instructions
The task is to predict the average value for the response variable \( y \) given an explanatory variable \( x \) value of 63.4. We will use a significance level of \( \alpha = 0.05 \) to assess the strength of the linear correlation between \( x \) and \( y \).
##### Steps to Follow:
1. **Data Plotting and Visualization:**
- Plot the dataset on a scatter plot.
- Analyze the trend and linearity of the data points.
2. **Calculate the Regression Equation:**
- Determine the slope (\( b \)) and intercept (\( a \)) of the regression line using formulas:
\[
b = \frac{n\sum{(xy)} - (\sum{x})(\sum{y})}{n\sum{x^2} - (\sum{x})^2}
\]
\[
a = \frac{\sum{y} - b(\sum{x})}{n}
\]
3. **Correlation Coefficient](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd2e83af7-7002-4478-a143-9229ac58fcb7%2F714400d4-6f7a-4976-8994-c4b844d3e3c4%2F5ea2ri3_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Regression Analysis on Bivariate Data
This section of the educational website will walk you through performing a regression analysis on a given set of bivariate data, with the response variable denoted as \( y \).
#### Data Set
The table below displays the bivariate data with variables \( x \) and \( y \):
| \( x \) | \( y \) |
|---------|---------|
| 67.7 | -25.7 |
| 72.5 | -5 |
| 55.8 | 21.3 |
| 64.1 | 11 |
| 70.9 | 64.9 |
| 61.6 | -25 |
| 65.5 | 28.7 |
| 73.6 | 84.6 |
| 68.1 | 15 |
| 70.1 | 75.3 |
| 72.4 | 84.4 |
| 56.1 | 92 |
| 55 | -5.4 |
| 72.5 | 16.5 |
| 72 | 38.7 |
| 64 | 38.7 |
| 70.8 | -15.7 |
#### Instructions
The task is to predict the average value for the response variable \( y \) given an explanatory variable \( x \) value of 63.4. We will use a significance level of \( \alpha = 0.05 \) to assess the strength of the linear correlation between \( x \) and \( y \).
##### Steps to Follow:
1. **Data Plotting and Visualization:**
- Plot the dataset on a scatter plot.
- Analyze the trend and linearity of the data points.
2. **Calculate the Regression Equation:**
- Determine the slope (\( b \)) and intercept (\( a \)) of the regression line using formulas:
\[
b = \frac{n\sum{(xy)} - (\sum{x})(\sum{y})}{n\sum{x^2} - (\sum{x})^2}
\]
\[
a = \frac{\sum{y} - b(\sum{x})}{n}
\]
3. **Correlation Coefficient
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 2 images

Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON

The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman

Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman