With regards to correlation, what would 0 and +1 mean?
0 would be no correlation, +1 would be a perfect positive correlation.
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In what case would a correlation of 0.118 be significant?
When it's compared to the value in the table of critical values.
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When would you use Spearman's rank correlation test?
If the hypothesis states a correlation between 2 co-variables, the 2 sets of data are pairs of scores from 1 person or thing, and the data are ordinal or interval.
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What is the first step of the test?
State the alternative and null hypothesis.
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What is the second step?
Record the data, rank each co-variable, and calculate the difference. If there are 2 or more of the same number, calculate the rank by working out the mean of the ranks that would have been given.
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What is the third step?
Find the observed value.
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What is the fourth step?
Find the critical value.
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What is then final step?
State the conclusion.
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Why is the term 'alternative hypothesis' used?
Because it's the alternative to the null hypothesis.
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Why is a null hypothesis required in inferential tests?
Because they're looking at whether samples come from a population where there's no relationship or where there is a relationship.
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How should you begin a null hypothesis?
'There's no correlation between' or 'there's no difference between'.
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Other cards in this set
Card 2
Front
In what case would a correlation of 0.118 be significant?
Back
When it's compared to the value in the table of critical values.
Card 3
Front
When would you use Spearman's rank correlation test?
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