<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />

# Reducing Bias in Sampling

## Ways of selecting a sample to minimize bias

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Reducing Bias in Sampling

This Concept introduces students to methods for reducing bias.

0
• Video

## Stratified Sampling

Shows a way to gather a sample of an object with many different categories by making each category represented with equal numbers of objects.

0

## How The Poll Was Conducted

A real life example of the survey process is explained.

0

## Simple Random Sample

A simulation that creates random samples based on set parameters.

0

## Probability Sampling Techniques

An applet illustrates different sampling techniques.

0