Thursday, August 5, 2010

Nonparametric Tests - When Should The Marketer Use Them

Nonparametric Tests

When To Use Them

in Marketing


Statistical procedures are either parametric or nonparametric. Parametric statistical tests require assumptions about the population from which the samples are drawn. For example, many tests such as the t Test, Chi-Square tests, z Tests, and F tests, and many types of hypothesis tests require the underlying population to be normally distributed. Some tests require equal variances of both populations.

Sometimes these assumptions cannot be always be assumed. Examples of this would be if the population is highly skewed or if the underlying distribution or variances were entirely unknown.

Nonparametric tests have no assumptions regarding distribution of underlying populations or variance. Most of this are very easy to perform but they are not usually as precise as parametric tests and the Null Hypothesis usually requires more evidence to be rejected in a nonparametric test.



When To Use Nonparametric Tests


Nonparametric tests are often used as shortcut replacements for more complicated parametric tests. You can quite often get a quick answer that requires little calculation by running a nonparametric test.

Nonparametric tests are often used when the data is ranked but cannot be quantified. For example, how would you quantify consumer rankings such as very satisfied, moderately satisfied, just satisfied, less than satisfied, dissatisfied?

Nonparametric tests can be applied when there are a lot of outliers that might skew the results. Nonparametric tests often evaluate medians rather than means and therefore if the data have one or two outliers, the outcome of the analysis is not affected.

They come in especially handy when dealing with non-numeric data, such as having customers rank products or attributes according to preference.

If you would like to create a link to this blog article, here is the link to copy for your convenience:

Nonparametric Tests - When Should the Marketer Use Them?

nonparametric tests in excel, non parametric tests in excel, normal distribution, normality tests, normally distributed, statistical tests in excel
Please post any comments you have on this article. Your opinion is highly valued!



If You Like This, Then Share It...
Dig this Stumble upon Delicious Technorati Reddit Buzz it Twitthis

Excel Master Series Blog Directory

Statistical Topics and Articles In Each Topic

Posted by at
Labels: , , , , , , ,

7 comments:

  1. sriramApril 26, 2018 at 11:40 PM


    Well Said, you have furnished the right information that will be useful to anyone at all time. Thanks for sharing your Ideas.

    software testing course in chennai

    ReplyDelete
    Replies
    1. mary BrownAugust 27, 2020 at 9:27 PM

      The development of artificial intelligence (AI) has propelled more programming architects, information scientists, and different experts to investigate the plausibility of a vocation in machine learning. Notwithstanding, a few newcomers will in general spotlight a lot on hypothesis and insufficient on commonsense application. machine learning projects for final year In case you will succeed, you have to begin building machine learning projects in the near future.

      Projects assist you with improving your applied ML skills rapidly while allowing you to investigate an intriguing point. Furthermore, you can include projects into your portfolio, making it simpler to get a vocation, discover cool profession openings, and Final Year Project Centers in Chennai even arrange a more significant compensation.

      Data analytics is the study of dissecting crude data so as to make decisions about that data. Data analytics advances and procedures are generally utilized in business ventures to empower associations to settle on progressively Python Training in Chennai educated business choices. In the present worldwide commercial center, it isn't sufficient to assemble data and do the math; you should realize how to apply that data to genuine situations such that will affect conduct. In the program you will initially gain proficiency with the specialized skills, including R and Python dialects most usually utilized in data analytics programming and usage; Python Training in Chennai at that point center around the commonsense application, in view of genuine business issues in a scope of industry segments, for example, wellbeing, promoting and account.

      The Nodejs Projects Angular Training covers a wide range of topics including Components, Angular Directives, Angular Services, Pipes, security fundamentals, Routing, and Angular programmability. The new Angular TRaining will lay the foundation you need to specialise in Single Page Application developer. Angular Training

      Delete
  2. Sannihitha TechnologiesJanuary 11, 2019 at 3:45 AM

    Great info. I love all the posts, I really enjoyed,
    nice post and site, good work!
    I would like more information about this, because it is very nice.
    java training in hyderabad

    ReplyDelete
  3. vivikhapnoiApril 14, 2021 at 3:20 AM

    I’m excited to uncover this page. I need to to thank you for ones time for this particularly fantastic read !! I definitely really liked every part of it and i also have you saved to fav to look at new information in your site.
    vé máy bay đi hồ nam trung quốc

    giá vé máy bay hà nội đi quảng châu

    vé máy bay tphcm đi thượng hải \vé máy bay hà nội đi thượng hải

    giá vé máy bay đi anh quốc

    đặt vé máy bay đi mỹ ở đâu

    vé máy bay từ mỹ về việt nam 2020

    ReplyDelete
  4. vivikhapnoiAugust 17, 2021 at 3:03 AM

    Took me time to read all the comments, but I really enjoyed the article. It proved to be Very helpful to me and I am sure to all the commenters here! It’s always nice when you can not only be informed, but also entertained
    vé máy bay từ úc về việt nam

    gia ve may bay vietjet tu han quoc ve viet nam

    Có chuyến bay từ Hàn Quốc về Việt Nam không

    khi nào có chuyến bay từ mỹ về việt nam

    Chuyến bay nhân đạo từ Nhật về Việt Nam

    vé máy bay từ los angeles về việt nam

    ReplyDelete
  5. vé máy bay từ canada về việt namOctober 13, 2021 at 7:34 PM

    Aivivu đại lý vé máy bay, tham khảo

    mua ve may bay di my

    mua vé về việt nam

    đặt vé máy bay từ nhật về việt nam

    vé máy bay từ đức về sài gòn

    giá vé máy bay từ Toronto đến việt nam

    vé máy bay hàn quốc hà nội

    vé máy bay chuyên gia nước ngoài sang Việt Nam

    ReplyDelete
  6. Các mẫu nhà đẹpJuly 19, 2022 at 3:10 AM

    Thanks for Sharing This Article.It is very so much valuable content.
    thiết kế nhà tối giản kiểu nhật

    tranh treo cầu thang đẹp

    đèn tường ngoài trời hiện đại

    đèn led phòng khách

    tủ hồ sơ văn phòng

    tủ giày đẹp

    ReplyDelete

Subscribe to: Post Comments (Atom)