# Which software application published by Minitab has a feature/module/fiile named "powersamplesize"? What is powersamplesize?

The software application published by Minitab that includes the feature/module/file named "powersamplesize" is **Minitab Statistical Software**. This feature is specifically designed to help users determine the appropriate sample size needed for various statistical analyses based on power analysis.
### What is power.sample.size?
**Power sample size** analysis is a method used in statistical studies to determine the minimum sample size required to detect an effect of a specified size with a desired level of statistical power.
### Key Elements of Power Sample Size:
1. **Effect Size**: This is the magnitude of the effect you expect to find in your study (e.g., difference between groups, correlation). A larger effect size generally requires a smaller sample size to detect.
2. **Power**: This is the probability of correctly rejecting a null hypothesis when it is false (commonly set at 0.80, meaning an 80% chance of detecting an effect if there is one).
3. **Significance Level (Alpha)**: This is the threshold for determining whether an observed effect is statistically significant, often set at 0.05.
4. **Variability**: More variability within the data means a larger sample size is generally needed to detect a true effect.
Using the powersamplesize module in Minitab, researchers and statisticians can input these parameters and obtain the required sample size for their studies, which helps in proper study design and resource allocation.