Chapter 4 · Sampling · Slide 139/274

Margin of Error Approach to Determining Sample Size

Margin of error is the measure of a survey's precision.

4.4 · Sample Size Definition

Margin of error

Margin of error is the measure of a survey's precision.

The smaller the margin of error, the more precise the survey's estimates are.

Result with margin of error

31.55 %

32.45 %

32 %

Margin of error ± 0.45 percentage points

QUESTIONSTAR · Dr. Paul Marx 139 / 274