MATH 225N Week 8 Assignment; Understand the Difference Between Correlation and Causation- Explanation
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$5.00
| Term | Fall 2020 |
| Institution | MATH 225N Statistical Reasoning for the Health Sciences |
| Contributor | Gbenga |
- Question: How to Determine the Significance of the Correlation Coefficient
Given the r-value and the size of the sample, n,
- Find the degrees of freedom (df).
df=n−2,
where n is the sample size.
- Find the critical values in the table (using the degrees of freedom).
- Compare r to the appropriate critical value in the table to make a conclusion.
- If r is not between the positive and negative critical values, then the correlation coefficient is significant, meaning we can trust its validity and use the line for prediction.
- If r is between the positive and negative critical values, then the correlation coefficient is not significant, and we shoud not use the line for prediction.
- Question: Suppose you computed r=0.801 using n=10 data points. Using the critical values table below, determine if the value of r is significant or not
| Instituition / Term | |
| Term | Fall 2020 |
| Institution | MATH 225N Statistical Reasoning for the Health Sciences |
| Contributor | Gbenga |
