Calculation Of Sample Size For Survey. For example if you need 500 customers to respond to your survey and you know the response rate is 30 you should invite about 1666 people to your study 50030100 1666. Design your sampling strategy 5.
Before you can calculate a sample size you need to determine a few things about the target population and the level of accuracy you need. For example if you need 500 customers to respond to your survey and you know the response rate is 30 you should invite about 1666 people to your study 50030100 1666. N population size e Margin of error percentage in decimal form z z-score.
First turn your confidence level into a Z-score.
For example if our target population are children 6-59 months living in a pastoralist population. For example if our target population are children 6-59 months living in a pastoralist population. Weve provided an automatic calculator for this but as any good researcher and student knows its important to show your working. This Sample Size Calculator is presented as a public service of Creative Research Systems survey software.
