Introductory Statistics 2e

An inference depends on how observations were obtained as well as how they are summarised.

How to study this source

• What can a sample tell us about a population?

  coreSections 1.1–1.3

  An inference depends on how observations were obtained as well as how they are summarised.

• Who is missing from the data?

  coreChapter 1, sampling and experimental design

  A sampling frame defines who could enter the data and who could not.

• What does an interval estimate leave uncertain?

  coreChapters 7–8, sampling distributions and confidence intervals; introductory examples

  An interval’s interpretation depends on the procedure and its assumptions.

Ideas and questions

Read background definitions when a term blocks the argument. Then return to the source and reconstruct its claim in your own words.

Read alongside, read against