# Sample Surveys

## 9. Calculating Survey Weights

### Exercise 4

**Questions 1 of 2:**

If you use a simple random sample design, then you do not need to use survey weights.

Select True or False.

**Answer**:

False – There are other adjustments that get applied in calculating survey weights. For instance, adjusting for response rate or known population information may be used to calculate survey weights for a simple random sample.

**Questions 2 of 2:**

What are some reasons survey weights are used? Identify which reasons for using survey weights below are true and which are false.

The reasons are:

- Weights are unimportant except large-scale government surveys.
- To adjust for nonresponse, especially if it differs across subpopulations.
- To adjust for unequal selection probabilities so that estimates are unbiased.
- To adjust for the differences in the respondents.
- To incorporate known information about the population expressed as control totals so that estimates will be more accurate.

**Answers**:

Weights are unimportant except large-scale government surveys. **False**

To adjust for nonresponse, especially if it differs across subpopulations. **True**

To adjust for unequal selection probabilities so that estimates are unbiased. **True**

To adjust for the differences in the respondents. **False**

To incorporate known information about the population expressed as control totals so that estimates will be more accurate. **True**