# Hypothesis Testing – Analyze Phase

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Viewing 14 posts - 1 through 14 (of 14 total)
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• #33539

Griffiths
Participant

I have a GreenBelt candidate working on a project in the Analyze Phase.  She is trying to determine the best Hypothesis Test to use (in Minitab) and is having some problems.
The data that she is using is Discrete Data, where the information is either True or False or 1 or 2… type of data.
What would be the best type of Hypothesis test to use?  Can you please suggest a few different tools to use?
Thank you!

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#90871

Birdman
Participant

I would use a 2 proportion test as the data is Discrete

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#90873

faceman
Participant

I agree with birdman that a two proportion test is a good option.  Also, chi squared test would be appropriate, especially if sample size is small.

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#91091

Alexis Diomampo
Participant

You could use this as guide:
Type of Data                   Type of Test
1 Proportion data          =  1 Proportion test
2 Proportion data          =  2 Proportion Test
3 or more proportion     =  Contingency Table

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#91093

Jan Akerstrom
Participant

Try JMP instead of MINITAB. The structure of the software helps you determine the “correct” analysis. You classify the binary data as Nominal ord Ordinal and use the test probability function in the distribution platform.

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#91099

Hemanth
Participant

Hi Brett,
Well you would have got the answer from the previous posts. What bugged me was your green belt not being able to figure out the test for a simple application. So I guess there must be some complication to that and if not then you might consider checking the training program for your green belts.

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#91102

Chandrashekhar Deshmukh
Participant

Dear Mr. Brett,
Thank you very much for giving us the opportunity to share our thoughts.
Method of collecting data in % figures will give more input to best analysis which inturn will give digitised answer.
Thanking you,
Chandrashekhar Deshmukh

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#91106

gg
Participant

Have a look at the tables of tests for different types of data in the link below from the British Medical Journal.
http://bmj.bmjjournals.com/collections/statsbk/13.shtml
It is a good summary of what can be done.  Minitab should be able to do most if not all.
Data is data so do not get hung up about medical things.

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#91124

Judy Kloman
Participant

I am working a transactional process where my data is discrete. I have been able to successfully use 2 sample t hypothesis testing. The practical problem being: is  A equal to B or better than.

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#91128

Poe
Participant

Hi, Brett.
I learned a matrix of tools about analysis phase:
If you Y response variable is DISCRETE and you have only one X DISCRETE factor, you can use Chi Square Test or 2 Proportion Test.
If you Y response variable is CONTINUOS and you have two or more X DISCRETES factors, you must use ANOVA.
Regards.
Juan

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#91208

Griffiths
Participant

How do I get JMP software?

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#91298

sathish.N
Member

1) You should use Chi -Square if only your “Y” (Output) & “X” (Input/Process variables ) factors are discrete data type or You can compare two data (Ex: June & July) to come out with Variation in Outputs
2) You should use 2 Sample T-test to determine whether or not two processes or data set have equal means (or averages). Perform Hypothesis where:
Ho = Mean of Sample A is Equal to Mean of Sample B(P-value>.05)
Ha = Mean of Sample A is  Not Equal to Mean of Sample B (P-Value<0.05) .This is in subjective to Transaction Process, for manaufacturing industry use P value as 0.01.

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#91300

Tim
Member

You need to purchase it. See the third banner down on the bottom of this page. It’s a link for JMP in blue with the red border.
Tim

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#168302