Determining Sample Size

Statistics · Axiom Academy

LESSON Determining Sample Size Calculating required sample size for desired margin of error 1 The Margin of Error Relationship 2 Sample Size Formula for Means 3 Sample Size Formula for Proportions Always round UP to ensure adequate precision Account for non-response or dropout rates (increase n by 10-20%) For finite populations, use finite population correction Larger confidence levels require larger samples Smaller margins of error require much larger samples

This is the written version of the interactive lesson above. See the full Statistics course.