View by Category

Loading...

PPT – Probability and Inferential Statistics PowerPoint presentation | free to view - id: 15397b-ZDc1Z

The Adobe Flash plugin is needed to view this content

About This Presentation

Write a Comment

User Comments (0)

Transcript and Presenter's Notes

Probability and Inferential Statistics Key

probability concepts Event Basic law of

probability Union of probabilities

(Or) Joint probabilities (And) Conditional

probabilities (Given) Independent events

Example Problem 7.8 Crime Reported Not

reported Total Murder 12 12

24 Robbery 145 105 250 Assault

85 177 262 Rape 12 60 72 Auto

Theft 314 62 376 Total 568 416 984

Example using conditional probabilities P(A and

B) P(A) P(BA) P(B) P(AB) Thus, P(BA)

P(B) P(AB)/P(A) Suppose are tested for a

disease and result is negative--you want to know

probability you are actually sick (false

negative) A negative result, P(A) 90

(.9) B sick, P(B) 1 in 10,000

(.0001) P(negativesick) P(AB) 5 (.05)

95 accurate Then P(BA) .0001 .05/.9

.0000056 Issues? Use other info?

The Normal Probability Distribution The normal

or bell-shaped curve Symmetric and

unimodal Completely determined by mean (µ) and

standard deviation (s), note that mean

median mode A standard normal distribution is

a normal distribution with a mean of 0 and a s.d.

of 1 a variable with such a distribution is

denoted by Z If X is normally distributed with

mean µ and s.d. s, then Z (X - µ)/s has a

standard normal distribution

The Normal Probability Distribution

(cont.) There is a known probability of values

occurring within a given number of standard

deviations of the mean 68.26 lie within 1

s.d. of mean 95.44 lie within 2 s.d. of

mean 99.72 lie within 3 s.d. of mean Thus,

using tables that contain the probability values

associated with the standard normal distribution,

it is possible to determine the probability (or

chance) that a particular occurrence of a

normally distributed variable will be close to

or far from the mean value This is one of the

two key foundations of inferential statistics

An Example (p. 130 in MB) Z Table

Probability above Z 1.62 0.4474 5.26 0.73

2.40 -1.50 -0.4332 93.32 -0.48 -3.

16

Another Example (problem 8.2 in MB) Data µ

27.2 minutes s 4.9 minutes What percentage

take between 22.3 and 32.1 minutes? Z1 (X1 -

µ)/s (22.3 - 27.2)/4.9 -1.00 Z2 (X2 -

µ)/s (32.1 - 27.2)/4.9 1.00 Table value

for Z 1.00 is .3413 Thus, percentage between is

(84.13 - 15.87) 68.26 What percentage take

between 17.4 and 37.0 minutes? What percentage

take between 12.5 and 41.9 minutes? (extra) What

percentage take between 20.34 and 34.06 minutes?

About PowerShow.com

PowerShow.com is a leading presentation/slideshow sharing website. Whether your application is business, how-to, education, medicine, school, church, sales, marketing, online training or just for fun, PowerShow.com is a great resource. And, best of all, most of its cool features are free and easy to use.

You can use PowerShow.com to find and download example online PowerPoint ppt presentations on just about any topic you can imagine so you can learn how to improve your own slides and presentations for free. Or use it to find and download high-quality how-to PowerPoint ppt presentations with illustrated or animated slides that will teach you how to do something new, also for free. Or use it to upload your own PowerPoint slides so you can share them with your teachers, class, students, bosses, employees, customers, potential investors or the world. Or use it to create really cool photo slideshows - with 2D and 3D transitions, animation, and your choice of music - that you can share with your Facebook friends or Google+ circles. That's all free as well!

For a small fee you can get the industry's best online privacy or publicly promote your presentations and slide shows with top rankings. But aside from that it's free. We'll even convert your presentations and slide shows into the universal Flash format with all their original multimedia glory, including animation, 2D and 3D transition effects, embedded music or other audio, or even video embedded in slides. All for free. Most of the presentations and slideshows on PowerShow.com are free to view, many are even free to download. (You can choose whether to allow people to download your original PowerPoint presentations and photo slideshows for a fee or free or not at all.) Check out PowerShow.com today - for FREE. There is truly something for everyone!

You can use PowerShow.com to find and download example online PowerPoint ppt presentations on just about any topic you can imagine so you can learn how to improve your own slides and presentations for free. Or use it to find and download high-quality how-to PowerPoint ppt presentations with illustrated or animated slides that will teach you how to do something new, also for free. Or use it to upload your own PowerPoint slides so you can share them with your teachers, class, students, bosses, employees, customers, potential investors or the world. Or use it to create really cool photo slideshows - with 2D and 3D transitions, animation, and your choice of music - that you can share with your Facebook friends or Google+ circles. That's all free as well!

For a small fee you can get the industry's best online privacy or publicly promote your presentations and slide shows with top rankings. But aside from that it's free. We'll even convert your presentations and slide shows into the universal Flash format with all their original multimedia glory, including animation, 2D and 3D transition effects, embedded music or other audio, or even video embedded in slides. All for free. Most of the presentations and slideshows on PowerShow.com are free to view, many are even free to download. (You can choose whether to allow people to download your original PowerPoint presentations and photo slideshows for a fee or free or not at all.) Check out PowerShow.com today - for FREE. There is truly something for everyone!

presentations for free. Or use it to find and download high-quality how-to PowerPoint ppt presentations with illustrated or animated slides that will teach you how to do something new, also for free. Or use it to upload your own PowerPoint slides so you can share them with your teachers, class, students, bosses, employees, customers, potential investors or the world. Or use it to create really cool photo slideshows - with 2D and 3D transitions, animation, and your choice of music - that you can share with your Facebook friends or Google+ circles. That's all free as well!

For a small fee you can get the industry's best online privacy or publicly promote your presentations and slide shows with top rankings. But aside from that it's free. We'll even convert your presentations and slide shows into the universal Flash format with all their original multimedia glory, including animation, 2D and 3D transition effects, embedded music or other audio, or even video embedded in slides. All for free. Most of the presentations and slideshows on PowerShow.com are free to view, many are even free to download. (You can choose whether to allow people to download your original PowerPoint presentations and photo slideshows for a fee or free or not at all.) Check out PowerShow.com today - for FREE. There is truly something for everyone!

For a small fee you can get the industry's best online privacy or publicly promote your presentations and slide shows with top rankings. But aside from that it's free. We'll even convert your presentations and slide shows into the universal Flash format with all their original multimedia glory, including animation, 2D and 3D transition effects, embedded music or other audio, or even video embedded in slides. All for free. Most of the presentations and slideshows on PowerShow.com are free to view, many are even free to download. (You can choose whether to allow people to download your original PowerPoint presentations and photo slideshows for a fee or free or not at all.) Check out PowerShow.com today - for FREE. There is truly something for everyone!

Recommended

«

/ »

Page of

«

/ »

Promoted Presentations

Related Presentations

Page of

Home About Us Terms and Conditions Privacy Policy Contact Us Send Us Feedback

Copyright 2017 CrystalGraphics, Inc. — All rights Reserved. PowerShow.com is a trademark of CrystalGraphics, Inc.

Copyright 2017 CrystalGraphics, Inc. — All rights Reserved. PowerShow.com is a trademark of CrystalGraphics, Inc.

The PowerPoint PPT presentation: "Probability and Inferential Statistics" is the property of its rightful owner.

Do you have PowerPoint slides to share? If so, share your PPT presentation slides online with PowerShow.com. It's FREE!

Committed to assisting Tamu University and other schools with their online training by sharing educational presentations for free