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2.1.4 Variety of sampling techniques

Why is sampling often used instead of a census?

A

Sampling is usually quicker and cheaper.

B

Randomly select clusters, then study all or sampled members within them.

C

For systematic sampling, the approximate interval is k=Nnk=\frac{N}{n}k=nN​, and the starting position is chosen randomly from 1 to kkk.

D

The interval may repeatedly select the same part of a pattern.

2.1.4 Variety of sampling techniques Flashcards

  1. A Level
  2. /Maths
  3. /2.1.4 Variety of sampling techniques

Flashcards for OCR (MEI) A Level Maths 2.1.4 Variety of sampling techniques, covering the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03. 23 cards, matched to the OCR (MEI) A Level Maths (H640) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.