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Which is the right chart

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Viewing 23 posts - 1 through 23 (of 23 total)
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  • #46302

    Gadgil
    Member

    I want to plot incoming call volume (half hour intervals) on a control chart, what is the right control chart to use. Thank you.

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    #152790

    Tim K.
    Member

    Hi Vinayak – good question.  Have you done any reseach yet to get closer to a reasonable answer?  Have you narrowed down your choices? 

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    #152793

    Whitehurst
    Participant

    I chart

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    #152797

    Jim Shelor
    Participant

    An X chart will give you mean, standard deviation, and control limits if you want them.
    The question is, what are you trying to control?

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    #152802

    Vidyadhar
    Member

    Use an I & MR Chart.

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    #152804

    BritW
    Participant

    Not sure what a control chart will do for you in terms of olume only, but the individuals chart is the one to go with (I&MR).

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    #152806

    NpBB
    Participant

    Better watch out, someone like Darth is going to yell at you for asking others to do your homework.

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    #152815

    Darth
    Participant

    Thanks for the vote of confidence but, in this case, it isn’t a matter of doing homework. It is a matter of a poorly asked question from someone with little knowledge and no apparent desire to learn something on their own.

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    #152821

    sigmond
    Member

    Good to see you back Darth! 

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    #152822

    BB
    Participant

    Charting for charting’s sake is a waste of time.  What is the problem you are trying to solve ?

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    #152827

    Darth
    Participant

    Sorry, my Dad passed away a few weeks ago and I have been busy dealing with those things one deals with under those circumstances.  Pretty well under control now so I am back, at least a little bit more.

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    #152829

    Chris Seider
    Participant

    Darth,
    My condolences on your loss….

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    #152831

    Allthingsidiot
    Participant

    Run-chart

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    #152832

    Jikui
    Participant

    U chart or C chart for it maybe Poisson Distribution

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    #152833

    Allthingsidiot
    Participant

    Thank You.Please  explain  why?regards

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    #152837

    Whitehurst
    Participant

    Can you some explain what is the purpose of MR chart?
    I feel its a chart without any practical usage
    regards
    joe

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    #152835

    Madhu
    Participant

    I-MR chart would be the right one.

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    #152840

    Mike Carnell
    Participant

    Darth,
    Sorry to hear about your father. Heart felt condolences from everyone here.
    Regards,
    Mike

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    #152841

    Craig
    Participant

    Have you characterized the variability yet? I would suggest a multi-vari analysis first. You need some basis for rational subgrouping.
    The hierarchy could go:
    Call center (1,2,…n)
    Week (1,2,…n)
    Shift (1,2,3)
    Hour (1,2,….8)
    I would have to understand you needs a little better to be sure about this, but it is not always the best idea to jump into control charting without proper characterization.
    Good Luck
    HACL
     

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    #152846

    Tierradentro
    Participant

    I agree with BB and HALC.
    You need to help us out a little and define your problem first.  If you are looking for variation that’s one thing.  I’m not sure a control chart is the right tool based upon the little information provided.

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    #152849

    Darth
    Participant

    Mike, thanks.  If you are in town, I am working from the house.  Give a call at your convenience.

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    #152867

    Adam
    Participant

    If you are measuring the number of incoming calls, that would be discrete data which means you would not use an i chart.  And since you are measuring occurances and cannot say that each occurance has an equal opportunity, I would go with a u chart.

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    #152932

    Heebeegeebee BB
    Participant

    D,
    I’m sorry for your loss…I hope you are doing ok.
     

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Viewing 23 posts - 1 through 23 (of 23 total)

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