Chapter 3: Statistics
The word "statistics," for most people, conjures up an image of pages
upon pages of numbers or, in any event, numbers (often large) that have
been massed to prove or illustrate an argument. Descriptive statistics
is the name given to the art of arranging large quantities of data in manageable
form and of calculating a few numbers from these data to describe and clarify
their nature. Statistical inference, on the other hand, is the art
of making statements about large collections of things on the basis of
an examination of relatively few of them. We examine briefly the subject
of descriptive statistics in the first section; inference occupies our
attention in the remainder of the chapter.
3.2 Population and sample
3.3 What if it were?
for Education Statistics
of a data set
© 2006 by Kendall/Hunt