Which of the following is true?...

Which of the following is true?

A

The two lines of regression can never be Parallel

B

The two lines of regression coincide if `e^(2)=1`

C

The two lines of regression ate at right angles if `e=0`

D

If the two variables x and y are related linearly, then `e=-1 or 1`

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The correct Answer is:

A, B, C, D

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