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Posted: March 17th, 2023
Unit 7 assignment | Statistics homework help
In this lesson, you will run a correlation between the resting and after exercising heart rates to determine if a linear relationship exists between the two variables and how strong the relationship is.
Steps
- Open the Heart Rate Dataset in Excel and identify the X-variable (resting heart rates for all 200 participants) and the Y-variable (after exercise heart rates for all 200 participants).
- Use the Scatter Plot function in the Insert Charts section of Excel to create a scatter plot of the X and Y variables
- Add a trendline to the scatter plot
- Use the Data Analysis tools in Excel to find the regression equation.
- In a Word document, describe the relationship between the X-variable (resting heart rate)and the Y-variable (after exercise heart rate).
Review these videos as needed to complete this assignment.
https://www.youtube.com/watch?v=gBbGBrHTMrM&feature=youtu.be
- Graph the scatter plot with a trend line. Does it appear there is a linear relationship? What does this mean?
- Calculate the correlation coefficient r using excel. Is this r (value) high compared to +1? Based on the correlation coefficient is the relationship strong?
- Use excel to find the regression equation. Identify the slope. What does it tell us in terms of our heart rate data?
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