levo

Sampling, Ethics and Practical Issues

Snowball and volunteer sampling

  • 3 things to know
  • AS Unit 2 and A2 Unit 4

Overview

Snowball sampling, volunteer sample and why volunteers are unlikely to represent the population.

What you need to know

Answer each one before you reveal it.

Your recallNot started
Key term

What is snowball sampling?

Key term

Give an example of a group for which snowball sampling would be appropriate.

Key term

Explain how trust is transferred in snowball sampling.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is snowball sampling?

    Model answer

    A method in which initial contacts introduce the researcher to further participants, who introduce others in turn.

  2. 2

    Why is snowball sampling often the only option for studying hidden groups?

    Model answer

    Because such groups appear on no sampling frame, so members can only be reached through people who already know them.

  3. 3

    Give an example of a group for which snowball sampling would be appropriate.

    Model answer

    People involved in illegal drug use, who would not identify themselves to a researcher approaching them cold.

  4. 4

    Explain how trust is transferred in snowball sampling.

    Model answer

    An existing participant vouches for the researcher, so the next person is willing to take part on the strength of that recommendation.

  5. 5

    Give the main weakness of a snowball sample.

    Model answer

    Participants recruit people like themselves, so the sample reflects one network rather than the whole hidden population.

  6. 6

    Why can a snowball sample never be shown to be representative?

    Model answer

    The size and composition of the hidden population are unknown, so there is nothing to compare the sample against.

Other ways to work this

The same content, four other ways.

What is inside Levo

Six ways to work the same material.

1Closed book
2Open book
3Closed book

The 3-step method, run for you

Answer cold, learn it, then prove it stuck. Levo tracks the jump between your first attempt and your last.

Culture and the Social Construction of Culture
Socialisation and Its Agencies
Socialisation and Identity
Families and Households

Cram a whole paper in one sitting

Sort every topic into what you know and what you do not, then drill only the weak ones.

Davis and .
MooreParsonsMerton

Blank Blitz makes facts automatic

Rapid timed gap-fills on the terms and numbers you need to recall without thinking.

AThe sacred is set apart and treated with awe.
BThe profane is the ordinary and everyday.
CReligion consists in marking the boundary between them.

Build It gets the exam shape right

Assemble a full-mark answer from its marking points, in the order an examiner wants them.

Illness means what the person experiences.
TrueFalse

Test It catches misconceptions

Spot the fault in a statement. The traps are the mistakes students actually make.

721941163128510

Brain Breaks between sessions

Short focus games to reset attention, so the next set lands better than the last.

Every question in Sampling, Ethics and Practical Issues, 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.