1. “Forward” vs “Reverse”
Know
Find
Value Of
Variable
(X)
Proportion Of
Individuals
(area)
Forward
Proportion Of
Individuals
(area)
Value Of
Variable
(X)
Reverse
Normal Distributions

2. “Forward” vs “Reverse”
Quantitative Value 3 -3 2 -2 -1
Quantitative Value 3 -3 2 -2 -1 ?
0.16 1 1 1 ?
Normal Distributions

3. What Type Of Question?
What proportion of students will score between 70 and 90 on the next exam?
What is the test score such that 15% of the students score higher?
What is the gas mileage that has 25% of the cars lower?
What proportion of cars get more than 20 mpg?
What are the two heights that contain the most common 50% of professor’s heights?
Forward -Between
Reverse – Right of
Reverse – Left of
Forward - Right of
Reverse - Between
Normal Distributions