S1181_05Normal.pdf

5 Pages
107 Views

Department
Business Administration
Course Code
BUS 336
Professor
Masood Kamlani

This preview shows pages 1 and half of page 2. Sign up to view the full 5 pages of the document.
Description
Stat 1181 Notes Normal Curve and DistributionDensity Curve vs Normal CurveWhen describing the shape it is not too convenient to draw so many bars in a histogramInstead a density curve is usedLike the area of all bars in histogram is 100 the area under the density curve is also 100When the curve is used to describe a Normal shape it is called the Normal curve Normal DistributionsThe Normal distribution or Normal shape is singlepeaked and symmetricNote that Normal shape always implies symmetryIt looks rather like a bell and hence it is called bellshape sometimesOnce the meanand the standard deviationare known we are able to know more about the Normal distribution The 6895997 RuleThe 6895997 rule is a very handy rule for rough estimationIt says that when a numerical variable has a Normal shape the following three statements are true 1 About 68 of all observed values are within onefrom 2 About 95 of all observed values are within twofrom 3 About 997 of all observed values are within threefrom This idea can be summarized graphically below Page 1 of 4
More Less
Unlock Document

Only pages 1 and half of page 2 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit