METHODS OF DATA ANALYSIS
PARAMETRIC AND NON PARAMETRIC TESTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -True; no consistency. If a scatter plot shows a set of data points that form a circular pattern, the correlation should be near zero.
Detailed explanation-2: -When all the points on a scatterplot lie on a straight line, you have what is called a perfect correlation between the two variables (see below). A scatterplot in which the points do not have a linear trend (either positive or negative) is called a zero correlation or a near-zero correlation (see below).
Detailed explanation-3: -A scatterplot with no correlation has data that does not follow a pattern, neither positive nor negative.
Detailed explanation-4: -A circular scatter plot usually indicates a moderately strong positive relationship between the variables.