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Marketing

Sampling methods and sample reliability

  • 2 things to know
  • Components 01, 02 and 03

Overview

Recall questions on sampling and why businesses sample, random, stratified, cluster, systematic, quota and convenience sampling, which method represents minority groups, sampling bias, how sample size affects confidence, why large samples can still mislead, and the flaw in surveying a store's own shoppers.

What you need to know

Answer each one before you reveal it.

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Key term

What is sampling in market research?

Key term

Why does a business sample rather than survey the whole population?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is sampling in market research?

    Model answer

    Sampling is surveying a selected part of the target population and using the results to draw conclusions about the whole.

  2. 2

    Why does a business sample rather than survey the whole population?

    Model answer

    Questioning everyone would cost far more and take far longer than the extra accuracy is worth.

  3. 3

    Explain random sampling.

    Model answer

    In random sampling every member of the population has an equal chance of being selected, usually by drawing at random from a complete list.

  4. 4

    How does stratified sampling work?

    Model answer

    The population is divided into strata such as age or income bands, and each is sampled in proportion to its size in the population.

  5. 5

    Explain cluster sampling.

    Model answer

    The population is divided into groups, often by area, and whole clusters are then selected at random and surveyed.

  6. 6

    How does systematic sampling work?

    Model answer

    Every nth name is taken from a list of the population after a randomly chosen starting point.

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Introduction to Business
Business Objectives and Strategy
External Influences
Accounting and Finance

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Revenue the cost of sales.
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AHow much finance the business needs to raise.
BHow much personal risk the owner is willing to carry.
CHow much control they want to keep.

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Customer means the person who buys a product and pays for it.
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