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Population, sample, and good data

Population, sample, and good data

Population shown as a large group, sample as a highlighted subset, strata boxes, and a numbered list with every fifth member selected from a random start

In statistics, the population is the whole group we want information about, while a sample is the smaller group we actually collect data from. A census means collecting data from every member of the population.

Data Collection Lesson

  1. A Level
  2. /Maths
  3. /Data Collection

Step-by-step lessons on Edexcel A Level Maths Data Collection, covering 1.1 Populations and Samples, 1.2 Sampling, 1.3 Non-Random Sampling, 1.4 Types of Data, and 1.5 The Large Data Set. Each one builds up to exam-style questions. Build fluency with the core pure algebra and calculus toolkit early, since almost every mechanics and statistics topic on the course depends on it.

Lessons