Refer to the accompanying scatterplot. a. Examine the pattern of all 10 points and subjectively determine whether there appears to be a strong correlation between x and y. b. Find the value of the correlation coefficient r and determine whether there is a linear correlation. c. Remove the point with coordinates (9,9) and find the correlation coefficient r and determine whether there is a linear correlation. d. What do you conclude about the possible effect from a single pair of values?

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Evanavarijo1986 Evanavarijo1986

21-11-2019
Mathematics

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Refer to the accompanying scatterplot. a. Examine the pattern of all 10 points and subjectively determine whether there appears to be a strong correlation between x and y. b. Find the value of the correlation coefficient r and determine whether there is a linear correlation. c. Remove the point with coordinates (9,9) and find the correlation coefficient r and determine whether there is a linear correlation. d. What do you conclude about the possible effect from a single pair of values?

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topeadeniran2 topeadeniran2 · Answer 1 · 2022-04-26T18:13:50+02:00

There is a strong correlation between x and y and the value of the correlation coefficient for the data points is -0.906.

What is a correlation coefficient?

It should be noted that correlation coefficient is simply used to measure how strong a relationship is between two variables.

At 0.05 significance level, there's a linear correlation between x and y which is in the critical stage.

Lastly, the conclusion about the possible effect from a single pair of values is that the effect from a single pair of values can change the conclusion.

Learn more about correlation on:

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