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…

Representative Samples: Does Sample Size Really Matter?

During the early phases of a survey project, a common question is, “How do I get responses from every person I survey?” The answer is, usually, you don’t need to. Unless you’re working with a very small group, the vast majority of the time, you only need to get responses from a smaller portion of…

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…