If the regression line y = - 0.3 - 0.5 x , so the sign of correlation coefficient is

positive

all of them

zero

negative

If the regression line y = - 0.3 + 0.5 x , so the slope of line is

-0.3

0.5

-0.5

0.3

The follwoing numbers can value of probability except

2.0

0.12

0.2

11/12

If r = 0.9 then r is

1-Weak positive linear correlation coefficient

2-Strong positive linear correlation coefficient

3-Weak negative linear correlation coefficient

4-

Strong negative linear correlation coefficient

The range of the linear correlation coefficient r is

1 r 1

1 r 0

0 r 1

2 r 1

The value of the probability of any event lies between the numbers

0 , 1

- 1 , 1

- 1 , 0

0 , 0.1

f we have the data

Then the linear correlation coefficeint r equal

r = - 1

r = - 0.8

r = 0.1

r = 0.8

If a = 2 and b = - 0.2 , the the regression line of x , y is

y = 2 + 0.2 x

y = - 2 - 0.2 x

y = 2 - 0.2 x

y = - 2 + 0.2 x

In a roll of a single die , the probabilty of the event of even numbers who appear is

1

3/6

2/6

1/6

If P(E) = 0.4, then P( ) =

0.5

0.6

0.7

0.1