Statistical Consultation Line: (865) 742-7731
  Professional Statistician For Hire
  • Research
    • Research Questions
    • Research Designs
    • Statistical Power
    • Sample Size
    • Evidence-Based Medicine
    • Diagnostic Testing
    • Epidemiology
    • Variables
  • Statistics
  • Databases
  • Surveys
  • Psychometrics
  • Education
  • Store

Chi-square assumption

The chi-square assumption means at least five observations must be in every cell of the 2x2 table

There is one primary statistical assumption for chi-square analysis. The chi-square assumption stipulates that there has to be at least five observations in each cell of the 2x2 table associated with the analysis. When the chi-square assumption is violated, then a Fisher's Exact Test is the correct statistical test to use.

The unadjusted odds ratio with 95% confidence interval is still the primary inference, regardless of using a chi-square or Fisher's Exact test. The p-value yielded from the statistical tests is not interpreted due to the lack of precision and accuracy in measurement and sampling error, especially with smaller sample sizes. The width of the 95% confidence interval determines the precision and accuracy of the inference yielded from these statistics.

Chi-square assumption and applied statistics

Fisher's' Exact Test
Chi-Square
Back to Statistical Assumptions
Research Engineer Home Page

Statistician Services for Students

$50.00
Buy Now
NEED TO HIRE A STATISTICIAN?
Eric Heidel, Ph.D. will provide the following services for undergraduate and graduate students at $50/hour. Secure checkout is available with Stripe or PayPal.
  • Statistical Analysis 
  • Research Design
  • Sample Size Calculations
  • Diagnostic Testing and Epidemiological Calculations
  • Survey Design and Psychometrics

AppNotch: Convert this website into an Android and iOS app.

AppNotch team will notify you when your app gets approved in Google Play and Apple iTunes App Stores. Once your app goes live, enter your App Store URLs in this property window, publish your Weebly site and your app store icons will be visible in this page.

Please visit AppNotch.com FAQ to learn more about how to add App Store icons to your website, update your app, send Push notifications and more.

Professional Statistician For Hire!

Copyright © 2018 Scalë. All Rights Reserved. Patent Pending.

✕