One-sample median test
One-sample median tests compare an observed median to a hypothesized value in a given population
For instance, let's say researchers believe that the college-age students will rate the look of a new social networking site at as a "4" on a 5-point Likert scale. Researchers collect a representative sample from a Psychology 101 class and find a median value of "1." This difference of ratings between what researchers expected (Median = 4) and the observed value (Median = 1) may be statistically significant according to a one-sample median test.
The most important part of the one-sample median test is to state the hypothesis for the expected median value in an a priori fashion.
The steps for conducting a one-sample median test in SPSS
2. Click Analyze.
3. Drag the cursor over the Nonparametric Tests drop-down menu.
4. Click One Sample.
5. Click on the Settings tab.
6. Under the Customize tests marker, click on the Compare median to hypothesized (Wilcoxon Signed-rank test) box to select it.
7. In the Hypothesized median: box, type in the a priori hypothesized median value.
8. Click on the Run button.
The steps for interpreting the SPSS output for one-sample median test
If the p-value is LESS THAN .05, then the observed median was significantly different than the hypothesized median.
If the p-value is MORE THAN .05, then the observed median was NOT significantly different than the hypothesized median.
Statistician Services for Professionals
Eric Heidel, Ph.D. will provide the following services for researchers, professionals, and organizations at $100/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.