What is a normal probability curve?
1 Answer
Normal probability curve is the plot of probability density function of the normal distribution. This probability curve is bell shaped, has a peak at mean
Following is the formula.
Following is an example of a normal probability curve with mean
graph{1/sqrt(2*pi) * (e^((-x^2)/2)) [-4, 4, -0.2, 0.5]}
Following is an example of a normal probability curve with mean
graph{1/sqrt(2pi15^2) * (e^((-(x-100)^2)/(2*15^2))) [40, 160, -0.007, 0.05]}
It might be hard to notice but the second graph is a lot more spread out.