Day 6: Correlation and Regression Lines #1

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Objective
In this challenge, we practice calculating the correlation between two elements.

Resources
Here are some useful articles explaining the relationship between and the slopes of the regression lines.

  1. Correlation and R-squared
  2. Khan Academy tutorial about the coefficient of determination
  3. Formula: where the symbols used are the standard ones, given the context.

Task
For a particular scatter plot, the line of regression of on is:

And the line of regression of on is:

Find the Pearson Product moment coefficient, , correct to a scale of decimal places.

Output Format

Your answer should be a single floating point/decimal number, correct to a scale of decimal places. You can submit solutions in either of the following ways:

  1. Solve the problem manually and submit your result as Plain Text. In the text box below, enter a single floating point/decimal number.
  2. Submit an R or Python program, which uses the above parameters (hard-coded), then computes and prints the score.

Your answer should follow the format below, and must not contain any extra white space or newline characters:

4.23
Line: 1 Col: 1
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