![]() ![]() ![]() If a question asks how quickly customers’ online shopping was delivered and the answers range from “extremely quick” to “moderately quick”, those who think the delivery was slow won’t know which answer to choose. Keep it inclusive. Scales should span the entire range of responses.This can be tricky when using word labels instead of numbers, so make sure you think carefully about how the words you use could be interpreted. Keep it continuous. Response options on a scale should be equally spaced apart from each other.Our methodologists recommend using five points for a unipolar scale and seven for bipolar scales. They’re more likely to start picking an answer randomly, which can make your data meaningless. But how many options should you give people? Research shows that people have difficulty defining their point of view on a scale greater than seven. Keep it odd. Scales with an odd number of values are helpful because they have a midpoint.Survey respondents might not know which end of the range is positive or negative. Label the options. Numbered scales that don’t contain any words (like 1–5), can be problematic.
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