# Study design

AP®︎ Statistics,

Statistics is all about forming questions and gathering data to explore those questions. This unit covers sampling and survey methods, observational studies, and basic experiment design.

This course contains 4 segments:

Sampling and observational studies

When we want to gather data from a large population, we survey or observe a sample from that population. This lesson covers sampling and survey methods and the types of conclusions that can be drawn.

Sampling methods

The goal of sampling is to get a group that is representative of its population. This lesson explores different strategies we can use — like stratified and cluster sampling — to get a good sample. We'll also look at possible sources of bias in voluntary response and convenience sampling.

Types of studies (experimental vs. observational)

This lesson covers how to distinguish between a few primary types of studies used to collect data. Learning to identify a study as either observational or experimental helps us in making appropriate conclusions.

Experiments

An experiment assigns some subjects to receive a treatment while others don't get the treatment. Experiments allow us to see how a treatment affects changes in a response variable. This lesson covers basic principles of experiment design.

Rating Not enough ratings 4 segments On Demand (Start anytime) Free Khan Academy On all desktop and mobile devices English Mathematics Math AP Statistics

## Careers

An overview of related careers and their average salaries in the US. Bars indicate income percentile.

Survey Crew Member \$50k

Survey \$55k

Survey data entry \$58k

Survey Research Center Data Analyst \$58k

Supervisor Survey Inspector \$60k

Survey Researcher 1 \$60k

Survey Department \$60k

Survey Specialist 3 \$65k

Designer - GIS Survey Data 1 \$66k

Procurement Specialist - Reservoir Sampling & Analysis (RSA) \$77k

Procurement Specialist - Reservoir Sampling & Analysis (RSA) \$77k

Survey Statistician - Data Analyst \$79k

## Write a review

Your opinion matters. Tell us what you think.