Inferential statistics

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Created by
Layla Baker

Subdecks (5)

Cards (37)

  • What is a normal distribution curve?
    Where the mean, mode, and median are in the centre with 50% of the scores on either side of the mean and is symmetrical.
  • What is a skewed distribution?
    A distribution where there is a greater spread of scores on one side
  • What is the mode?
    Most frequent score and is always the highest point of a distribution
  • What is the median?
    The middle-point of the data with 50% of scores either side
  • What is the mean?
    The one most affected and is furthest along the tail
  • What is probability?
    The likelihood of a certain pattern in the data is due to chance rather than the actual variables being studied.
  • What is significance?
    A significant result is one where there is a low probability that chance factors were responsible for any difference or correlation between the variables tested.
  • What is the relationship between probability and significance?
    As the probability of the results being due to chance increases, the significance of the results decreases.
  • What is a type 1 error?
    Where we think there was a significant effect when really the results were due to chance. Accidentally accept the alternative hypothesis and reject the null hypothesis.
  • What is a type 2 error?
    Where we think that there was no effect when there was. Accidentally accepting the null hypothesis when we should have rejected it.
  • What are the requirements for a parametric test?
    1. interval data
    2. normally distributed spread
  • How to choose an appropriate non-parametric statistical test?
    1. Test of differeance or correlation
    2. If difference, unrelated or related
    3. level of data