All categories

3 years ago

Two variables have a positive linear correlation. Is the slope of the regression line for the variables positive or negative?

Mathematics

1 answer:

ss7ja [257]3 years ago

4 0

Answer:

positive

Step-by-step explanation:

The slope of the regression line is the product of the correlation coefficient and the ratio of the standard deviations of y and x. Standard deviations are always positive, so the sign of the regression line slope is determined by the sign of the correlation coefficient.

If the correlation is positive, the slope of the regression line is positive.

_____

In the formula attached, "b" represents the slope of the regression line.

You might be interested in

Stella bought 14 purses for $50. The next day she bought 2 more for a total of $38. What was the mean cost per purse?

denpristay [2]

Answer:

$48.5

Step-by-step explanation:

Given data

Number of purses= 14+2= 16

Cost of 14 purses= $50

Cost of 2 purses= $38

Let us use the weighted cost method

Mean cost = (14*50+ 2*38)/16

Mean cost = (700+ 76)/16

Mean cost = 776/16

Mean cost =$48.5

8 0

3 years ago

5.Sebuah kapal selam berada 420.5 m di bawah aras laut. Kapal selam itu menyelam sedalam 185.6 m dan kemudian menaik 200.9 m. Te

andrezito [222]

Translation:
5. A submarine is 420.5 m below sea level. The submarine dived 185.6 m deep and then climbed 200.9 m. Determine the new position of the submarine based on sea level.

4 0

3 years ago

The weights (in ounces) of 14 different apples are shown below. Find Q 3. 5.7 5.5 4.7 4.4 6.8 5.7 5.5 6.9 6.0 4.4 5.7 6.9 4.4 4.

elena55 [62]

I Think 5.7 I’m Not Sure

6 0

3 years ago

HELP PLEASSEE

Marizza181 [45]

The diameter is 4 inches.

6 0

3 years ago

The proper angle for a ladder is about 75 ∘ 75∘ from the ground. suppose you have a 14 foot ladder. how far from the house shoul

jonny [76]

We just use the sinus rule to calculate this

a / sin alpha = b / sin beta

Alpha is the 90 degree angle from the wall to the floor
beta is the angle from the top of the ladder to the wall,
wich is 90 degrees - 75 degrees (triangle has 180 degrees angles, one is 90 degrees), so beta = 15 degrees

14 foot / sin 90 = b / sin 15
sin 90 = 1
we move the sin15 over to the other side

14 foot x sin 15 = b
b = 3.62 foot

5 0

3 years ago

Two variables have a positive linear correlation. Is the slope of the regression line for the variables positive or​ negative?

Two variables have a positive linear correlation. Is the slope of the regression line for the variables positive or negative?