Correlations
- Created by: myah
- Created on: 29-12-12 17:35
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- Correlations
- A correlation is an investigation into the relationship
between two variables. They focus only on the relationship between these
variables and can be used as a starting point before experimental
investigations.
- Advantages of correlations:
- Correlation allows the researcher to investigate naturally occurring variables that maybe unethical or impractical to test experimentally.
- Correlation allows the researcher to clearly and easily see if there is a relationship between variables this can then be displayed in a graphical form.
- Disadvantages of correlations
- Correlation is not and cannot be taken to imply conclusion. Even if there is a strong association between two variables, we cannot assume that one causes the other.
- Correlation does not allow us to go beyond the data that is given.
- Advantages of correlations:
- A positive correlation is as one variable increases the other variable increases although not necessarily at the same rate.
- A negative correlation is as one variable increases the other variable decreases although not necessarily at the same rate.
- Hypothesis for correlations
- One tailed hypothesis:· There will be a significant positive/negative correlation...
- Two tailed/alternate hypothesis: There will be a significant correlation...
- Null hypothesis: there will be no correlation ...
- A correlation is an investigation into the relationship
between two variables. They focus only on the relationship between these
variables and can be used as a starting point before experimental
investigations.
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