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Influential Consider the following set of
Chapter 7, Problem 45AYU(choose chapter or problem)
Influential Consider the following set of data:
(a) Draw a scatter diagram of the data and compute the linear correlation coefficient.
(b) Draw a scatter diagram of the data and compute the linear correlation coefficient with the additional data point (10.4, 9.3). Comment on the effect the additional data point has on the linear correlation coefficient. Explain why correlations should always be reported with scatter diagrams.
Questions & Answers
QUESTION:
Influential Consider the following set of data:
(a) Draw a scatter diagram of the data and compute the linear correlation coefficient.
(b) Draw a scatter diagram of the data and compute the linear correlation coefficient with the additional data point (10.4, 9.3). Comment on the effect the additional data point has on the linear correlation coefficient. Explain why correlations should always be reported with scatter diagrams.
ANSWER:Step 1 of 3
x |
y |
2.2 |
3.9 |
3.7 |
4 |
3.9 |
1.4 |
4.1 |
2.8 |
2.6 |
1.5 |
4.1 |
3.8 |
2.9 |
3.6 |
4.7 |
4.9 |