OCR A-Level Business (H431) H431
Introduction to Business
Business Objectives and Strategy
External Influences
Accounting and Finance
Human Resources
Marketing
Operations Management
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.
Why does a business sample rather than survey the whole population?
Questions from this subtopic
Each one with the model answer underneath.
- 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
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
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
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
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
How does systematic sampling work?
Model answer
Every nth name is taken from a list of the population after a randomly chosen starting point.
Other ways to work this
The same content, four other ways.
What is inside Levo
Six ways to work the same material.
Every question in Marketing, on a schedule.
Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.
Or £46 a year, about £3.83 a month. Cancel anytime.