0

I have a typical question if someone can help.

Construct two bivariate data sets (choose number of cases to suit yourself), each with correlation above 0.9, so that the combined data set has negative correlation.

enter image description here

puth pura
  • 1
  • 1
    Welcome to Cross Validated! What progress have you made with this [tag:self-study] question? – Dave Oct 12 '22 at 23:08
  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. – Community Oct 13 '22 at 03:06
  • See https://stats.stackexchange.com/a/366667/919, https://stats.stackexchange.com/q/478463/919, https://stats.stackexchange.com/q/316319/919 and more generally see our posts on Simpson's Paradox. – whuber Oct 13 '22 at 16:54
  • I am able to get two set of bivariate data with correlation greater than .9. But I don't know how to combine them to get a negative correlation – puth pura Oct 16 '22 at 07:41
  • This excercise deals with a common misconception found among many beginning statisticians. If we merge two data sets each with high positive correlation, it seems reasonable to expect that the merged data will also have positive correlation. This exercise asks you to find a counter example. – puth pura Oct 16 '22 at 10:11

0 Answers0