Exercise

# Exercise 3 - Odds Ratio Calculation

It doesn't look like the grade A- polls performed significantly differently than the grade C- polls in their states.

Calculate the odds ratio to determine the magnitude of the difference in performance between these two grades of polls.

Instructions

**100 XP**

- Calculate the odds that a grade C- poll predicts the correct winner. Save this result to a variable called
`odds_C`

. - Calculate the odds that a grade A- poll predicts the correct winner. Save this result to a variable called
`odds_A`

. - Calculate the odds ratio that tells us how many times larger the odds of a grade A- poll is at predicting the winner than a grade C- poll.