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Hello student for the given problem we have to explain what a correlation study so correlation study is a type of research design that looks at the relationship between two or more variables now correlation can be a strong or weak and positive or a negative now correlation coefficient measures a strength of correlation.
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Now it can be ranges from minus 1 to a plus 1.
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Now a correlation coefficient 0 indicates that there is no correlation between two variable.
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So if correlation coefficient r is equals to 0, that means there is no correlation between two variables.
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Now positive correlation means one variable increases, then other variable also increases.
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This is a positive correlation.
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Now negative correlation means one variable increases and other variable decreases.
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This is a type of negative correlation.
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Now no correlation means there is no relationship.
01:38
So no correlation means there is a no relationship between a two variable...