Hypothesis Testing, Parametric Criteria
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25 terms
Terms | Definitions |
|---|---|
 Nothing has an effect on anything else/ nothing is going on | Give example of a null hypothesis? |
| Something is having an effect on something else/ something is going on | Give example of a alernative hypothesis? |
| H0 | What is the Null hypothesis also called? |
| Hi | What is the alternative hypothesis also called? |
| When the results can be found to be significant using the 5% signifcant level | When can the alternative hypotheis be accepted? |
| A hypothesis which predicts that by manipulating the IV there will be a change to the DV. However it doesn't predict what the change will be. | What is a non directional hypothesis? (two tailed) |
| A hypothesis which predicts that by manipulating the IV there will be a change to the DV. However it does predict what the change will be. | What is a directional hypothesis? ( one tailed) |
| The Non directional hypothesis predicts that there will be a change but doesnt predict was it is. Whereas the Directional hypothesis does predict the change | Whats the difference between a Directional- one tailed and a Non Directional- two tailed hypothesis? |
| When we operationalise a variable we develop a way in which the variable under test conditions can be measured | What is Operationalising Variables mean? |
| No | Is time a operationalised variable? |
| Number of words recalled (to test memory) | Give an example of a variable which has been operationalised? |
| Measure the time taken to complete a task in seconds | How can you operationalise time? |
| What is the investigation looking to find? Should I use a parametric or non parametric test to analyse the data? What is the experimental design of the study? | What are the three questions which will lead you to the correct statistical test? |
| What is the investigation looking to find | What is the first question which will lead to to the correct test? (parametric criteria) |
| A difference between two conditions, A relationship between two variables, an assoication/ difference between the frequencies of categorical data | Give some examples of answers for the question what is the investigation looking to find? |
| Should I use a parametric or non parametric test to analyse the data | What is the second question which will lead you to the correct test? (parametric criteria) |
| Second. Should I use a parametric or non parametric test to analyse the data | Which question has 3 criterion to find the answer? (parametric criteria) |
| Use interval data, sample of people from a normally distributed population, the data collected must display Homogeneity of Variance. | What is the criteria for a parametric test? |
| V= sd2 | How to calculate variance? |
| What is the experimental design of the study? | What is the third question which will lead you to the correct test? (parametric criteria) |
| Related design- repeated measures or matched pairs Unrelated design- independent groups/ independent measures. | What are the two experiamental designs which can be chosen from question 3 ? |
| Similarity | What does Homogeneity mean? |
| Interval data | What type of data do parametric tests use? |
| Repated measures, matched pairs | Name the two related experimental designs? |
| Independent measures | Name the Unrelated experimental design? |
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