Exercise

Exercise 4 - Significance

We did not find meaningful differences between the poll results from grade A- and grade C- polls in this subset of the data, which only contains polls for about a week before the election. Imagine we expanded our analysis to include all election polls and we repeat our analysis. In this hypothetical scenario, we get that the p-value for the difference in prediction success if 0.0015 and the odds ratio describing the effect size of the performance of grade A- over grade B- polls is 1.07.

Based on what we learned in the last section, which statement reflects the best interpretation of this result?

Instructions

50 XP

Possible answers