Sampling methods

• Sampling methods

  Random- equal chance of being chosen but unrepresentative. Opportunity- people who available at that time, quick but small selection. Systematic- system free of researcher bias but is unrepresentative. Stratified- selected randomly from a group, wide population but time-consuming.
• Sampling methods

  Quota- researcher chooses a group, wide population but volunteer bias.Self-selected- volunteers, participants are willing to take part but volunteer bias. Snowball- first participant chooses the next, study hard to access groups but doesn't represent wide population. Volunteer- people decide to be in the study, more ethical but volunteer bias.
• Sampling in Observations

  Time- very detailed but is time-consuming. Event- more time efficient but limits the level of detail.