Survey Sample Size: What Should It Be?

Your survey sample size, or the number of people from your target population that you distribute your survey to, has a big impact on both your costs and your data. If you pay to distribute your survey to every single college graduate in a particular class, your costs will be astronomical. But if you just…

How the Source of Your Data Impacts Your Survey Results

What’s a statistically significant sample size? Do my results apply to the population as a whole? Exactly how many responses do I need before I can trust my survey data? These are common questions about how to get survey data that you can act on with confidence, and we hear variations on this theme quite…

Statistical Significance in Market Research

I’ve been doing survey design and market research for 25 years and I’m still amazed when I’m asked, “How many responses do I need to make my study ‘statistically significant’?” Hearing those words “statistically significant” in a market research context always confuses me. My usual response is, “What exactly do you mean by that?” I…