Page Contents

## How do you understand statistics?

Statistics is a form of mathematical analysis that uses quantified models, representations and synopses for a given set of experimental data or real-life studies. Statistics studies methodologies to gather, review, analyze and draw conclusions from data. Some statistical measures include the following: Mean.

## How do you determine if there is a statistical difference?

Usually, statistical significance is determined by calculating the probability of error (p value) by the t ratio. The difference between two groups (such as an experiment vs. control group) is judged to be statistically significant when p = 0.05 or less.

## How do you know if a survey is statistically significant?

You may be able to detect a statistically significant difference by increasing your sample size. If you have a very small sample size, only large differences between two groups will be significant. If you have a very large sample size, both small and large differences will be detected as significant.

## What percentage of responses to a survey is good?

A survey response rate of 50% or higher should be considered excellent in most circumstances. A high response rate is likely driven by high levels of motivation to complete the survey, or a strong personal relationship between business and customer. Survey response rates in the 5% to 30% range are far more typical.