1) Fifteen students were weighed and their pulse rates were measured: Weight (x kg) Pulse rate (y beats per min) 65 59 54 74 69 87 61 59 70 69 75 60 56 53 58 46 37 32 57 47 64 42 30 52 56 65 43 36 28 40 a Draw a scatter diagram for the data. b Calculate r. Describe the relationship between weight and pulse rate.
1) Fifteen students were weighed and their pulse rates were measured: Weight (x kg) Pulse rate (y beats per min) 65 59 54 74 69 87 61 59 70 69 75 60 56 53 58 46 37 32 57 47 64 42 30 52 56 65 43 36 28 40 a Draw a scatter diagram for the data. b Calculate r. Describe the relationship between weight and pulse rate.
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

Transcribed Image Text:**Title: Analyzing the Relationship Between Weight and Pulse Rate**
**Objective:**
This task involves analyzing the relationship between weight and pulse rate among fifteen students. The student data includes both weights (in kg) and corresponding pulse rates (beats per minute). You will create a scatter diagram, calculate the correlation coefficient, and perform other analyses on the data.
**Data Table:**
| **Weight (x kg)** | 46 | 37 | 32 | 57 | 47 | 64 | 42 | 50 | 52 | 56 | 65 | 46 | 38 | 40 |
|-------------------|----|----|----|----|----|----|----|----|----|----|----|----|----|----|
| **Pulse rate (y beats per min)** | 65 | 59 | 54 | 74 | 69 | 87 | 61 | 59 | 70 | 59 | 70 | 75 | 56 | 58 |
**Tasks:**
a. **Draw a Scatter Diagram for the Data:**
- Plot the given data points on a graph with "Weight (kg)" on the x-axis and "Pulse rate (beats per minute)" on the y-axis.
b. **Calculate the Correlation Coefficient (r):**
- Determine the strength and direction of the linear relationship between weight and pulse rate.
c. **Describe the Relationship Between Weight and Pulse Rate:**
- Analyze and explain the trend observed from the scatter diagram and correlation calculation.
d. **Calculate the Mean Point (x̄, ȳ):**
- Compute the mean for both weight and pulse rate.
e. **Locate the Mean Point on the Scatter Diagram:**
- Use the mean point in drawing a line of best fit on the scatter diagram.
f. **Estimate the Pulse Rate of a 50 kg Student:**
- Using the line of best fit, predict the pulse rate for a student weighing 50 kg. Discuss the reliability of this estimate based on the correlation coefficient.
**Graphical Diagram:**
- The scatter plot visually represents the data and helps in identifying any patterns or relationships between the two variables: weight and pulse rate.
**Conclusion:**
By completing these steps, you will gain insights into how weight may affect pulse rate and the reliability of making predictions based on this data.
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 3 images

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