Categories: Email Marketing

Calculator: Calculate Your Survey’s Minimum Sample Size

Developing a survey and ensuring you have a valid response on which you can base your business decisions requires quite a bit of expertise. First, you have to ensure that your questions are asked in a manner that doesn’t bias the response. Second, you have to ensure that you survey enough people to get a statistically valid result.

You don’t need to ask every person, this would be labor-intensive and quite expensive. Market research companies work to attain a high level of confidence, and a low margin of error while reaching the minimum quantity of recipients necessary. This is known as your sample size. You are sampling a certain percentage of the overall population to attain a result that provides a level of confidence to validate the results. Utilizing a widely accepted formula, you can determine a valid sample size that will represent the population as a whole.

If you’re reading this via RSS or email, click through to the site to use the tool:

Calculate Your Survey Sample Size

How Does Sampling Work?

The Formula for Determining The Minimum Sample Size

The formula to determine the minimum sample size necessary for a given population is as follows:


  • S = Minimum sample size you should survey given your inputs.
  • N = Total population size. This is the size of the segment or population that you are wishing to evaluate.
  • e = Margin of Error. Whenever you sample a population, there’s going to be a margin of error in the results.
  • z = How confident you can be that the population would select an answer within a certain range. The confidence percentage translates to the z-score, the number of standard deviations a given proportion is away from the mean.
  • p = Standard deviation (in this case 0.5%).


Published by

Recent Posts

Demand Side Platform (DSP) Advertising

Source by [pin_pinner ]

4 weeks ago

How to connect with Gen X, Millennials and Gen Z

The art of attracting and selling to customers is undergoing rapid and unprecedented transformation. To…

1 month ago

What is the Best Time to Post on Instagram in 2023?

Listen to this blog The latest social media statistics prove that Instagram is a powerhouse…

2 months ago