Flashcards
Hypotheses and samples
Cards in this deck (18)
- 1What is a null hypothesis?A testable statement saying that any difference or correlation is due to chance
- 2What is an alternative hypothesis?A testable statement predicting that there will be a relationship between variables
- 3What is a two-tailed (non-directional hypothesis)?A statement predicting that one variable will be related to another
- 4What is a one-tailed (directional) hypothesis?A statement predicting the direction of a relationship between variables
- 5What is a target population?The group from which a sample is drawn
- 6What is a sample?A group of people selected from a target population as representatives
- 7What is random sampling?Each member of the population has an equal chance of being chosen
- 8Name an advantage of random samplingRepresentative as all types of people in the population have an equal chance of being chosen
- 9Name a disadvantage of random samplingHard to ensure everyone is likely to be chosen as sample may be biased, e.g. more girls than boys
- 10What is snowball sampling?From a very small number of participants, more are contacted through the initial group
- 11Name 2 advantages of snowball sampling- Relatively easy because the researcher only has to find the first few pp's
- A convenient way to find a sample of a particular type of participant (especially if your population is not easy to contact) - 12Name a disadvantage of snowball samplingNon-representative as pp's are likely to be similar in ways other than any common characteristics needed for the study
- 13What is opportunity sampling?Participants are chosen because they are readily available
- 14Name an advantage of opportunity samplingQuick and easy
- 15Name a disadvantage of opportunity samplingNon-representative as the kinds of people available are likely to be limited and therefore similar
- 16What is self-selecting sampling?Participants are invited to participate, e.g. through advertisements, and those who reply become the sample
- 17Name an advantage of self-selecting samplingRelatively easy because the participants come to you and are committed
- 18Name a disadvantage of self-selecting samplingNon-representative as the kinds of people who respond to requests are likely to be similar, e.g. have free time
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- GCSE Psychology Flashcards on Hypotheses and samples, created by Livvy Allen on 15/01/2018.
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- Livvy Allen
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