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← Correlation on Subsets - Data Analysis with R

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Showing Revision 2 created 05/24/2016 by Udacity Robot.

  1. Based on the correlation coefficient in this plot, we
  2. just observed that the relationship between age and friend
  3. count is not linear. It isn't monotonic, either increasing
  4. or decreasing. Furthermore, based on the plot, we know
  5. that we maybe don't want to include the older ages
  6. in our correlation number. Since older ages are likely
  7. to be incorrect. Let's re-calculate the same correlation coefficient
  8. that we had earlier with users who are ostensibly
  9. age 70 or less. What Cmd would you use to subset our data
  10. frame so that way we can get a correlation coefficient for just this data?