In this lesson, we are going to talk about samples and about cases, variables, and measurement within samples. We need to talk about samples because statistics is all about data and data is made up of cases. Each individual that is part of that data set is called the case, and cases are actually made up of variables. You could think of variables as different characteristics within a case and a variable can take on different values. The process of getting new data is called research and often research is taught with the five scientific steps. You'll learn more about research in this lesson.
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
This book provides a clear and methodical approach to essential statistical procedures. It clearly explains the basic concepts and procedures of descriptive and inferential statistical analysis. This book features a new emphasis on expressions involving sums of squares and degrees of freedom as well as a stronger stress on the importance of variability.