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Samples Sizes

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Viewing 57 posts - 1 through 57 (of 57 total)
  • Author
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  • #37209

    Ryan
    Member

    I am curious to get some feedback regarding determining sample sizes for test marketing purposes.
    I want to determine how many people I need to test an email on to guage the results of how the total population would respond to the test market email.  If I know my population size is say 20,000, I can tolerate a 3% margin or error, I get a consistent email open rate of 25% and I want to be 80% confident that the test results match the population. 
    Is there a specific formula I need for this becuase I’m getting confused as to which one it would be and if the information I have would fit into that formula. 

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    #109046

    Darth
    Participant

    Yes there is a formula:
    n = (z/delta)squared times p(1-p)  Substitute your .03 for delta, your .25 for p and find the z value for a confidence level of 80% and substitute for z.
     

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    #109214

    arvind pathak
    Participant

    Please send me your email id.I will forward you an excel template wherein you can simply put values and get the sample size.It works for both types of data(Continuous and Discreet).

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    #109215

    Tex
    Member

    Hallo Ryan,
     
    have you tryed the site http://www.raosoft.com/samplesize.html ?

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    #109216

    Andhale
    Participant

    Hi arvind,
    I would like to recieve the tempelate. Please me the same at: [email protected]
    Regards,
    Deepak

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    #109217

    Krishna Rao
    Participant

    Hi arvind,
    I am also equally interested to have the template which can help me in my work also… I have regular doubt that in a batch siz industry , how many samples size do we need to take to test whether sample sizes truely reflect the population
    Thanks
    krishna
     

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    #109218

    Tex
    Member

    Hello Arvind,
     
    do you mind to share the xls also to me ?
    [email protected]
    Thanks

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    #109219

    Kaushik
    Participant

    Greetings Mr. Pathak,
                                      Will you please send me the excel template to calculate the sample sizes? My mail id is as follows
    [email protected]
    Thanks in advance.
                             Arun
     

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    #109220

    Menke
    Participant

    Hi,
    could you send it to me as well?
    Thanks,
     
    Dirk

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    #109222

    soka
    Member

    i’m too intrested in the tamplete, pls send me.

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    #109224

    Sunitha
    Member

    Hi Arvind,
    Pls send me a copy of the Excel template as well.
    Thanks,
    Sunitha

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    #109225

    Hays
    Participant

    I too would like a copy of the template. You can email it to: [email protected]
     
    Thanks

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    #109227

    Rogerio Santos
    Member

    Hello Arvind,
    I’d appreciate to receive the excel file you mentioned. Thanks.
    [email protected]
     

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    #109228

    Lawrence Chappell
    Participant

    Arvind,
    Would you please forward the template to me as well?
    [email protected]
     

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    #109229

    Kooz
    Participant

    Arvind, Please send me your excel template. Thanks in advance for your time. – Kooz  ([email protected])  

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    #109230

    Art
    Participant

    Arvind, I’d like the excel spreadsheet!  Could you please forward it to me at [email protected]?  thanks!

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    #109231

    Canonman23
    Participant

    If you would be so kind as to send me the Excel spreadsheet also that would be great. [email protected]

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    #109232

    Dreemr
    Participant

    I would also appreciate a copy of this file.  Please send it to me at [email protected]
    Thank you
    David

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    #109233

    lynn dennis
    Participant

    Arvid Pathak,
     
    Can you please send me the excel template?
     
    Thanks,
    Lynn
    [email protected]

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    #109238

    Becky Nickel
    Participant

    Arvind,
    Please email me the Excel template if you would be so kind.
    [email protected]
     

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    #109240

    Luc
    Participant

    Arvind, could you send me a copy also.
    Thanks
     
    Luc

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    #109241

    Vera
    Member

    Hi Arvind,
    Would you mind sharing your file with me as well?
    [email protected]
    Thanks,
    Vera
    SSBB

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    #109242

    Nanni
    Participant

    Arvind,
    Would you please forward the template to me as well?
    [email protected]
    Thanks a lot !
    Nanni.
     

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    #109243

    RubberDude
    Member

    Tex,
    Good call…… good website!
    It bothers me that 19 people want someone to send them an “Excel Template” that is a simple input of the formula posted by Darth.  It’s a simple spreadsheet design most Excel users can set up in two minutes or less……
    But the website you posted makes it even better…. with alternate scenarios……
    Bookmarked here…. thanks!

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    #109244

    Mikel
    Member

    How about them Tigers?
    War damn eagles!

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    #109246

    Christena
    Participant

    Would appreciate If you can send me also the file. Thanks.
    My email id is [email protected]
    -Christy

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    #109247

    RubberDude
    Member

    Go ahead…. rub it in……
    HOW ‘BOUT THEM YANKEES!!!!!!!!!

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    #109250

    Roberto
    Member

    Hi Arvind, If possible, I wouyld to receive copy of your spreadsheet, tks.
    [email protected]
     

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    #109251

    Francisco
    Participant

    Arvind,
    Could you also send me the template.
    [email protected]
    Thanks,
    Francisco

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    #109255

    oef
    Participant

    Well, if you don’t mind, I also would appreciate receiving this template.  You seem to be a popular fellow lately.  Thanks!!

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    #109258

    tk
    Member

    Dear Arvind,
     
    Please also send me the template.  I already have Minitab, but Excel would be more accessible for many.
    [email protected]
    Thanks,  TK
     

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    #109261

    rabbit
    Participant

    Hello, please may I have a copy of the excel template also?
    Kind appreciation, rabbit

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    #109267

    Miguel Rivera
    Participant

    Pls send me Excel Template also once you get from Arvind.

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    #109268

    mba
    Participant

    I would love a copy of your template as well. Please send to:
    [email protected]
    Thanks!

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    #109272

    Donny Cuvelier
    Participant

    Arvind,
      Can you add me to the list of people you will send this spreadsheet to.  Thank you.

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    #109277

    Miguel Rivera
    Participant

    Donny: Pls send me a sof copy of samplimg tool once you get form Arvind.
    Thx

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    #109278

    Donny Cuvelier
    Participant

    Please send spreadsheet to [email protected]

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    #109289

    Pat Gallagher
    Participant

    Arvind:
    I woould like a copy [email protected] Thank you.
    Pat

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    #109291

    Thomas
    Participant

    Arvind, this spreadsheet is very popular.  I would like a copy also, please send to [email protected].
    Thanks

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    #109294

    Samuel Ashby
    Member

    Arvind,
    Could you send that template to me at [email protected]
    Thanks,
    Sam

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    #109297

    Amitav Chaki
    Participant

    Arvind,
    Can you please send me the template. Thanks in advance

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    #109302

    dcla
    Participant

    I would really appreciate a copy of the templete as well. 
    email:  [email protected]
    Thanks, dcla

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    #109313

    Hani
    Participant

    Hi Arvind,
    I would also like a copy of the template. Please send it to me via email;
    [email protected]. Thanks in advance
    Hani

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    #109319

    Mansho
    Participant

    Arvind,
    Sorry

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    #109320

    Ashman
    Member

    Arvind,
    Sorry to jump on the bandwagon, but could you also send me the template? ([email protected])

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    #109328

    leroy
    Participant

    Could you send me this template the determining sample size also.

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    #109329

    Leroy Phillips
    Participant

    Could you please send me the template also at [email protected]. Thanks

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    #109334

    Waseem
    Member

    Arvind,
    Could you send me the same template at [email protected] ??
    Thanks in advance,
    Waseem

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    #109359

    Ryan
    Member

    Arvind,
    Thanks, I would appreciate an excel template.  My email address is [email protected]
    Ryan

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    #109362

    S.Minnis
    Member

    Arvind,
    Could you please email me the excel template
    Thank You!
    [email protected]
     
     

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    #109388

    Alfonso
    Participant

    Arvind,
     
    Please, could you send me the file as well?
    My personal adress is [email protected]
    Thanks in advance.

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    #109402

    thandi
    Participant

    Arvind,
        Since the saints go marching in I want to be in the number too. Please send me the template too at [email protected]

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    #109475

    k.bhadrayya
    Participant

    Dear Mr.Arvind
    I would like to have the excel template on sample size. Please send it to Email: [email protected]
    k.bhadrayya
     

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    #110365

    dudi amrullah
    Participant

    Upps … I am late; would you please count me in please – share the spreadsheet excell on how to calculate the sample size ….thanks

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    #110369

    Arshad K Butt
    Participant

    Greetings to all interested
    Please download the Excel template from
    http://www.cmh.edu/stats/training/datasets/conf.xls
     
    A K Butt

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    #110894

    Struja74
    Member

    Can you please send me the file as well.  Thanks.
    [email protected]

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    #130755

    allan
    Participant

    Hi,
    can you forward the this template to [email protected] as well.
    Thanks in advance
     
    rgs
    Allan
     
     
    Please send me your email id.I will forward you an excel template wherein you can simply put values and get the sample size.It works for both types of data(Continuous and Discreet).

    0
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