One Sample Wilcoxon Signed Rank Test

Description	One Sample Wilcoxon Signed Rank Test is a non-parametric version of a one-sample t-test. It is used to determine if the median of the sample value is equal to the known standard or theoretical value.
Why to use	To determine if a single group differs significantly from a known or a hypothesized value.
When to use	When the variable is continuous. When there is one group.	When not to use	You have non-continuous variables. When variables are non-numeric.
Prerequisites	Variables must be continuous. Variable is a random sample from the population.
Input	Numeric dataset	Output	Population median p Value Test statistic
Statistical Methods Used	Median Alpha (α)	Limitations	If the values of many data entries are the same, the test may produce incorrect results.

The system calculates the p value in this test and compares it with the alpha value.

Criteria	Interpretation
When the p-value is greater than alpha an alternative hypothesis can either be "Two-sided" or "One-sided (less than)" or "One-sided (greater than)".	As the p-value is greater than alpha, the population median does not differ from the hypothesized median.
When the p-value is less than or equal to alpha and the alternative hypothesis is equal to" Two-sided".	As the p-value is less than or equal to alpha, the population median differs from the hypothesized median.
When the p-value is less than equal to alpha and the alternative hypothesis is equal to "One-sided(less than)".	As the p-value is less than or equal to alpha, the population median is less than the hypothesized median.
When the p-value is less than equal to alpha and the alternative hypothesis is equal to "One-sided (greater than)".	As the p-value is less than or equal to alpha, the population median is greater than the population median hypothesized median.