Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


Copy of Studio IV: Restaurant Project

No description

Nikita Burman

on 8 April 2013

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Copy of Studio IV: Restaurant Project

What is DOE?

(Yes, we know you know, but still :P) Design Of Experiment Lets begin with two examples The Mystery of
Three Romeos and
A Hi! So whats the story like? Will the DOE prove successful in such a situation? Principles Of DOE Randomisation Replication Now, Have you ever wondered what happens inside a popcorn packet? Basic Idea behind the
experiment Key feature of well designed experiment Proper determination of response variable Using multiple comparison test with ANOVA What is ANOVA ? Let me make it more clear with an Example Ho: The mean reaction time for all the groups are the same Test: How the different types of drinks effect the reaction time. basic idea is to find: The variance within blocks
The variance between blocks Example 1: There is a lot of variation within group There is not much variation within groups
but the groups are very different. In this case the type of drink makes a big difference The larger the ratio,the more likely it is that groups have different means(ie. we reject Ho) Calculate the degrees of freedom;
b-df for variance between group
w-df for variance within group The test statistic is

F= variance between groups/
variance within group Analysis Of the experiment So, how do we start making an experimental design? Identifying a response variable Determining the experiemental unit Investigating the important factors We use percentage to standardise results from different brands. Investigating Factors

-Some factors kept constant
-To accoubt for all other extraneous factors, randomisation is done Factors Microwave Cooking Time Brand Of Popcorn Expensive Brand- Cheap Brand- Office Microwave Home Microwave 105 Seconds 135 Seconds Rich Popcorn Common Popcorn Determining the Experimental Unit Statistically significant results are obtained when:
-Units are as similar as possible.
-Units are randomly assigned to treatment combos.
-Large enough sample sizes are used.
-Each bag of popcorn is the experimental unit here. Conslusion: There is NO difference in the response time due to the different beverages. 2 square facorial design in RBD A- Cooking time
B- Brand
ao: 105 sec
a1: 135 sec
bo: Common Brand
b1: Rich Brand Any day to day uses of DOE?
Ah, yes! Thank You :)
Randomisation - rolling of dice

External factors :
1) Dad's temper - didn't allow her to go out of home
2) Bad mood of Renu - didn't perform as expected

Replication - 2 sets of experimental runs What is a factorial design ?
- estimates main effects and interaction effects

3 factors - Naren, Ravi, Deepak
2 levels - absence, presence

Response - whether Renu says Hi or not

Effect - Difference in response DEEPAK - Clear winner!! :D
Full transcript