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a correlation of 0.03 is considered to be a null one        true or false an strong...

a correlation of 0.03 is considered to be a null one

       true or false

an strong correlation between two variables establishes a cause and effect relationship between them

      true or false

a positive correlation is also known as direct

       true or false

if r=1 then all points in the scatter diagram are over the line of regression

   true or false

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Ans:

1)a correlation of 0.03 is considered to be a null one

       true,as correlation of 0.03 is very weak correlation.

2)an strong correlation between two variables establishes a cause and effect relationship between them

false,as correlation does not mean causation

3)a positive correlation is also known as direct

   true,positive correlation is known as direct and negative correlation is known as indirect

4)if r=1 then all points in the scatter diagram are over the line of regression

   true,as r=1 indicates a perfect correlation

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