Special Offer - FREE Mobile Sample Size Calculator
Click the link below to go to the Google Play Store to download the Sample Size Calculator for Android smartphones and tablets.

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Sample Size Marketing Calculators
Sample Size Marketing Calculators
Use the Sample Size Marketing Calculators to determine a sample size for testing the response to an upcoming B2B or B2C direct marketing campaign, or for a research survey in which you want to determine how many people to interview or send questionnaires (the minimum sample size).
This Sample Size Calculator includes 4 different tools for calculating sample size for testing and surveying.
- Infinite Universe Marketing Campaign Sample Size Calculator
- Infinite Universe Sample Size Calculator for Surveys and Testing
- Finite Universe Sample Size Calculator for Surveys and Testing where there is a finite universe of people
- Confidence Interval (Margin of Error) Calculator where both the sample size and population are known.
Background
The confidence level is expressed as a percentage and represents how sure you are that the actual percentage of the population who would respond lies within the percentage limit of error. The 95% confidence level means you can be 95% certain; the 99% confidence level means you can be 99% certain. Most researchers use the 95% confidence level. Greater confidence will generate larger sample sizes.
The percentage limit of error is the plus-or-minus error amount or deviation (expressed as a percentage) that you are willing to tolerate from your projected response rate. For example, if you enter a 2% response rate and are willing to accept an error (or deviation) in response of /- .3% (i.e., response between 1.7% and 2.3%) at a confidence level of 95%, your sample size will be 8,366. Enter the percentage as a whole number and / or decimal (i.e., 10 or .1 for 10%, 1 or .01 for 1%, .001 for .1% of a percent, etc.

To purchase this tool, click the link below.
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Sample Size Marketing Calculators
This tool includes two versions: 1) a HTML version and 2) an Excel template version. Unzip the file and open the folder and click on the index.html file to open the tool in your browser.
$9.99
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