What’s A One-Sample Sign Test?
The One-Sample Sign Test is a hypothesis test that determines whether a statistically significant difference exists between the median of a non-normally distributed continuous data set and a standard. It provides a way to determine if there is truly a difference between the standard and a particular data set median or whether the difference is due to random chance.
An example would be testing whether a call center, that has guaranteed a median hold-time of 1 minute, is performing as promised.
Learn more about One-Sample Sign Tests in Analyze Phase, Module 4.4.2 of Black Belt Training.
How To Run A One-Sample Sign Test In SigmaXL
1. Select Raw Data:
2. In The Menu Click Statistical Tools > Nonparametrics > 1-Sample Sign:
3. Click on “Next”:
4. Select unstacked column format
5. Highlight the data sets and click once on “Numeric Data Variable” to enter the data into the tab
6. Click on “OK”: