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Card 1 of 23

Why might a sample be used instead of a census?

A

A sample is usually quicker and cheaper to investigate.

B
  • Sampling error: random sample-to-sample variation
  • Non-sampling error: data collection or response problems
C

It prevents the investigator from systematically favouring particular units.

D

Every possible group of nnn distinct units is equally likely.

Card 1 of 23

2.1.3 Random sampling Flashcards

  1. A Level
  2. /Maths
  3. /2.1.3 Random sampling

23 flashcards on OCR (MEI) A Level Maths 2.1.3 Random sampling: the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03.

Flashcards