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  • 1.  descriptive statistics

    Posted 09-26-2015 16:17


    Hello everybody!

    I'd like to see how a characteristic (categorical variable with 5 values) is distributed into 3 countries. Is there any other way to go over it apart from frequency table or cross tabulation?

    Thank you in advance,

    Lina
    ------------------------------
    Efthalia Massou
    PhD candidate - Researcher
    Panteion University of Social and Political Sciences
    ------------------------------



  • 2.  RE: descriptive statistics

    Posted 09-26-2015 20:31
    Plot a five-bar histogram of the frequencies.

    --

    *** Wayne ***

    *** Wayne G. Fischer, BS, MS, PhD ***

    "Boat-rocker, wave-maker; paradigm-shifter; paradox-breaker."©

    ASQ Certified Manager of Quality & Organizational Excellence

    ASQ Certified Quality Engineer

    ASQ Certified Quality Auditor

    Certified "Team Skills" Instructor and Facilitator

    Certified "Improving Processes" Instructor and Facilitator

    Statistician - University of Texas Medical Branch / Galveston, TX 77555-0752

    wgfische@utmb.edu / office = 409-747-1509 / cell = 281-360-7584

    "A man of conscience, is one who never acquires tolerance, well-being, success, public standing, 




    ------Original Message------


    Hello everybody!

    I'd like to see how a characteristic (categorical variable with 5 values) is distributed into 3 countries. Is there any other way to go over it apart from frequency table or cross tabulation?

    Thank you in advance,

    Lina
    ------------------------------
    Efthalia Massou
    PhD candidate - Researcher
    Panteion University of Social and Political Sciences
    ------------------------------



  • 3.  RE: descriptive statistics

    Posted 09-27-2015 04:38

    Thank you!

    Apart from these descriptive methods, is there any other methodology that I could follow? As I know, no, but I'm asking in case that you have met something else.





    ------Original Message------

    Plot a five-bar histogram of the frequencies.

    --

    *** Wayne ***

    *** Wayne G. Fischer, BS, MS, PhD ***

    "Boat-rocker, wave-maker; paradigm-shifter; paradox-breaker."©

    ASQ Certified Manager of Quality & Organizational Excellence

    ASQ Certified Quality Engineer

    ASQ Certified Quality Auditor

    Certified "Team Skills" Instructor and Facilitator

    Certified "Improving Processes" Instructor and Facilitator

    Statistician - University of Texas Medical Branch / Galveston, TX 77555-0752

    wgfische@utmb.edu / office = 409-747-1509 / cell = 281-360-7584

    "A man of conscience, is one who never acquires tolerance, well-being, success, public standing, 






  • 4.  RE: descriptive statistics

    Posted 09-27-2015 04:59
    Sure...you could assign a number to each of the five levels of the categorical attribute, take averages (as done throughout the literature), ... .  Oh, wait a mo'...that assumes the five values possess the property of *distance* (and equidistance at that) - which they don't.

    The five-bar histogram contains and visually displays *all* the information contained in the data, and you don't need to be a statistician to compare them.  :-)

    --


    ------Original Message------

    Thank you!

    Apart from these descriptive methods, is there any other methodology that I could follow? As I know, no, but I'm asking in case that you have met something else.







  • 5.  RE: descriptive statistics

    Posted 09-27-2015 05:28

    Sure, I use bar chart with the frequencies of the categorical variable..but we don't have any other technique to see the distribution. I think that I'm right on this...or not?



    ------Original Message------

    Sure...you could assign a number to each of the five levels of the categorical attribute, take averages (as done throughout the literature), ... .  Oh, wait a mo'...that assumes the five values possess the property of *distance* (and equidistance at that) - which they don't.

    The five-bar histogram contains and visually displays *all* the information contained in the data, and you don't need to be a statistician to compare them.  :-)

    --




  • 6.  RE: descriptive statistics

    Posted 09-27-2015 16:48

    I'm a big fan of stacked barcharts for what you want to do. A stacked barchart would be a direct representation of your 5x3 table, much more so than a regular barchart. In Excel, you can arrange it so that the stacked bars for your three countries are side by side, with each country having 5 categories stacked on top of each other so that they visually sum to 100%, and with each category in the stack showing its cell frequency as its label. You can copy-paste your 5x3 table of cell counts directly into Excel, use the Chart Wizard to select Stacked Barcharts, have the basics done in 2 or 3 minutes, and have it looking half-way pretty in 10-to-15 minutes.

    Are your five categories nominal or ordinal?

    ------------------------------
    Eric Siegel
    Biostatistician
    Univ of Arkansas for Medical Sciences of Biostatistics
    ------------------------------




  • 7.  RE: descriptive statistics

    Posted 09-27-2015 16:51

    A mosaic plot is another way to visualize two-way cross-tabulated data.

    http://www.cyclismo.org/tutorial/R/intermediatePlotting.html

    Here's some discussion of the merits of mosaic plots vs other

    forms of visualization, including barcharts or histograms.

    https://www.perceptualedge.com/articles/visual_business_intelligence/are_mosaic_plots_worthwhile.pdf

    http://www.perceptualedge.com/example13.php

    Mosaic plots can be useful, but it's certainly true that they have a learning curve, and some limitations. (Personally, I find them most useful when there's a natural order in the values of one of the variables, with a coloring scheme applied that aligns with that ordering--e.g., red to white to green for bad/neutral/good or low/medium/high, etc.)

    >>Kathy

    ------------------------------
    Katherine Godfrey
    ------------------------------




  • 8.  RE: descriptive statistics

    Posted 09-29-2015 11:27
    Many thanks for your support, I haven't used them before, but I'm looking at the link you send me.

    Thank you!


    ------Original Message------

    A mosaic plot is another way to visualize two-way cross-tabulated data.

    http://www.cyclismo.org/tutorial/R/intermediatePlotting.html

    Here's some discussion of the merits of mosaic plots vs other

    forms of visualization, including barcharts or histograms.

    https://www.perceptualedge.com/articles/visual_business_intelligence/are_mosaic_plots_worthwhile.pdf

    http://www.perceptualedge.com/example13.php

    Mosaic plots can be useful, but it's certainly true that they have a learning curve, and some limitations. (Personally, I find them most useful when there's a natural order in the values of one of the variables, with a coloring scheme applied that aligns with that ordering--e.g., red to white to green for bad/neutral/good or low/medium/high, etc.)

    >>Kathy

    ------------------------------
    Katherine Godfrey
    ------------------------------




  • 9.  RE: descriptive statistics

    Posted 09-30-2015 06:40
    Hi, 

    Apart from the bar-chart, you might also like to to try multilevel pie-chart or Nightingale Rose (Polar Area) Diagram:


    --Ehsan

    ---------------------------
    Ehsan Motazedi
    Wageningen UR
    ---------------------------


    ------Original Message------

    Many thanks for your support, I haven't used them before, but I'm looking at the link you send me.

    Thank you!




  • 10.  RE: descriptive statistics

    Posted 09-30-2015 15:37
    Another perspective on "radar plots"...from Donald Wheeler in Making Sense of Data:

    Inline image 1

    --

    *** Wayne ***

    *** Wayne G. Fischer, BS, MS, PhD ***

    "Boat-rocker, wave-maker; paradigm-shifter; paradox-breaker."©

    ASQ Certified Manager of Quality & Organizational Excellence

    ASQ Certified Quality Engineer

    ASQ Certified Quality Auditor

    Certified "Team Skills" Instructor and Facilitator

    Certified "Improving Processes" Instructor and Facilitator

    Statistician - University of Texas Medical Branch / Galveston, TX 77555-0752

    wgfische@utmb.edu / office = 409-747-1509 / cell = 281-360-7584

    "A man of conscience, is one who never acquires tolerance, well-being, success, public standing, 




    ------Original Message------

    Hi, 

    Apart from the bar-chart, you might also like to to try multilevel pie-chart or Nightingale Rose (Polar Area) Diagram:


    --Ehsan

    ---------------------------
    Ehsan Motazedi
    Wageningen UR
    ---------------------------