CORRELATION VK OHRI

When two variables change in the same direction, then such a correlation is called

• Negative

• Positive

• No correlation

• All of these

When the relation of three or more variables is studied simultaneously, it is called

• Simple correlation

• Partial correlation

• Multiple correlation

• None of these

Relation between price and demand is

• Positive

• Negative

• one to one

• No relationship

when coefficient of correlation lies between+ 0.25 and +0.75, it is called

• Perfect degree degree of correlation

• High degree of correlation

• Moderate degree of correlation

• Low degree of correlation

coefficient of correlation always lies between

• Zero and plus one

• -1 and zero

• -1 and plus one

• None of these

rank for relation is as superior method of analysis in case of---------distribution

• Qualitative

• Quantitative

• Frequency

• None of these

When two variables change in a constant proportion, it is called

• Linear correlation

• Non-linear correlation

• Partial correlation

• None of these

Scatter diagram

• Does not measure the precise extent of correlation

• Gives only an approximate idea of the correlation

• Offers only a qualitative expression of the quantitative change

• All of these