When Should DK ("Don't Know")alternatives Be Used

question 6

Multiple Choice

When should DK ("don't know") alternatives be used?

• A)when collecting demographic information
• B)never-they will be overused by respondents
• C)whenever you are surveying people with moderate to low IQs
• D)when there is good reason to believe that some respondents will genuinely not know an answer

---

Definitions:

T-statistic

A statistic used in hypothesis testing, computed as the difference between the sample mean and the hypothesized population mean, divided by the standard error of the mean.

Z-score

A statistical measurement that describes a value's relationship to the mean of a group of values, measured in terms of standard deviations from the mean.

Variability

The extent to which data points in a statistical distribution or data set diverge from the average or mean value.

Sampling Distribution

The probability distribution of a given statistic based on a random sample, central to inferential statistics as it provides a basis for hypothesis testing.