Home » Mathematics » Statistics » Methods of Data Collection
Methods of Data Collection
III. Sampling and Experimentation: Lecture 1 | 12:04 min
QuickNotes™ 
Methods of Data Collection
A census is a sample survey that attempts to include the entire population.
A sample survey is a study of some group of individuals selected from a population to represent some larger group.
An experiment deliberately imposes some treatment on subjects in order to observe a response while an observational study does not attempt to influence the a response.
Discussion 
Start Learning Now
Our free movies below will get you started (Flash® 10 required).
Get immediate access to the entire Educator.com® Scholastic Lecture Video Archive!
Educator will soon release exercise problems for download. These exercise problems will be in addition to the four lecture examples of each lesson. Solutions to the exercise questions will be provided in video format for better understanding of the concepts. Exercise files are available to subscribers only. Learn more.