The number is just a label or name for a category that does not have any mathematical properties. easy way of coding behaviours
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Ordinal data
Involves numbers that can be put in order, but do not have any mathematical properties. Eg; on a scale of 1-10, 1 being strongly diagree and 10 being strongly agree, to what extent do you agree sweets should be banned in schools?
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Type 1 error false positive
Accepting the alternate hypothesis although the null was true
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Type 2 error false negative
Accepting the null hypothesis although the alternate was true
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Chi-square test
This is used for nominal data when data are categorical. you can have a two-by-two or a three-by-two chi square test
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Sign test
This is used for ordinal data when you are looking for a difference between conditions and your design is repeated measures.
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Wilcoxon signed ranks test
Used for ordinal or interval-level data and is used when you are lookung for a difference netween two conditions, whe your experimental design is either repeated measures or matched pairs
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Spearman's RHo rank correlation co-efficient
this is a test of relationship (correlation) can be used for ordinal, interval-level data and measures relationships between variables for each particpant
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