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Hypothesis Testing – Analyze Phase

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Viewing 14 posts - 1 through 14 (of 14 total)
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  • October 10, 2003 at 4:38 pm #33539

    Griffiths
    ★ 10 Years ★
    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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    October 10, 2003 at 4:45 pm #90871

    Birdman
    ★ 10 Years ★
    Participant

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

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    October 10, 2003 at 5:07 pm #90873

    faceman
    ★ 10 Years ★
    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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    October 16, 2003 at 5:31 am #91091

    Alexis Diomampo
    ★ 10 Years ★
    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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    October 16, 2003 at 6:37 am #91093

    Jan Akerstrom
    ★ 10 Years ★
    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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    October 16, 2003 at 8:53 am #91099

    Hemanth
    ★ 10 Years ★
    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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    October 16, 2003 at 9:27 am #91102

    Chandrashekhar Deshmukh
    ★ 10 Years ★
    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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    October 16, 2003 at 10:24 am #91106

    gg
    ★ 10 Years ★
    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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    October 16, 2003 at 1:37 pm #91124

    Judy Kloman
    ★ 10 Years ★
    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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    October 16, 2003 at 2:09 pm #91128

    Poe
    ★ 10 Years ★
    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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    October 18, 2003 at 2:29 pm #91208

    Griffiths
    ★ 10 Years ★
    Participant

    How do I get JMP software?

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    October 21, 2003 at 4:43 pm #91298

    sathish.N
    ★ 10 Years ★
    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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    October 21, 2003 at 5:27 pm #91300

    Tim
    ★ 10 Years ★
    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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    February 7, 2008 at 12:29 pm #168302

    Yadav
    ★ 10 Years ★
    Participant

    CAN YOU PROVIDE THE MATRIX OF POTENTIAL VARIBLE FOR TEST

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