All categories

3 years ago

For which of the following correlations would the data points be clustered most closely around a straight line?

Mathematics

1 answer:

Flauer [41]3 years ago

7 0

Answer:

The correct option is C) r=-0.80

Step-by-step explanation:

Consider the provided information.

Properties of r in a scatter plot:

The value of r is between -1 and +1.

If the value of r is positive then it associated with positive relationship if the value of r is negative it associated with negative value.

The greater value of r would be closely around a straight line(Regardless of sign).

Now consider the provided relation.

The use of regression line is to minimize the distance between projections and real values.

Correlation is inversely proportional to difference between predicted values and actual values.

So for good fit we just need to look for the highest value of r regardless of the sign.

From the provided options the highest value of r=-0.80

Thus, the correct option is C) r=-0.80

You might be interested in

5. How many ways are there to choose seven cards from a deck of 52?

Fiesta28 [93]

Answer:

674,274,182,400

Step-by-step explanation:

In this particular situation, the first card can be chosen in 52 ways. The second card can be chose in 51 (because when you chose the first card, there were 51 left), you keep doing that seven times

So, 52*51*50*49*48*47*46

Hope this helps.

7 0

2 years ago

Which situation could this graph represent?

HACTEHA [7]

Situation: The answer is D because running up a hill first takes less time, which you can see in the graph. Then, walking up a hill takes more time and you are going upward, which is expressed in the graph. Next, you run down the hill, which takes less time than walking which is on the graph. Finally, you walk the remainder of the hill downwards, which takes more time and is shown in the graph. Hope this helps!

7 0

2 years ago

Read 2 more answers

A washer and dryer cost $602 combines. The washer costs $48 less than the dryer. What is the cost of the dryer?

ipn [44]

554$ because you subtract 48$ from 602$

5 0

3 years ago

the units digit of a two-digit number is twice the tens digit. If the digits are reversed, the new number is 9 less than the ori

Anton [14]

Answer:

Step-by-step explanation:

Here is the correct and complete question: The units digit of a two-digit number is twice the tens digit. If the digits are reversed, the new number is 9 less than twice the original number. What is the original number?

Lets assume the original number be"10y+x". (x is unit digit and y is 10th digit)

∴ if number is reversed then resulting number be "10x+y".

As given: x= 2y

and $10x+y= 2(10y+x)-9$

Now, solving the equation to get original number.

$10x+y= 2(10y+x)-9$

Distributing 2 to 10y and x, then opening the parenthesis.

⇒ $10x+y= 20y+2x-9$

subtracting by (2x+y) on both side.

⇒ $8x= 19y-9$

subtituting the value of "x", which is equal to 2y.

∴ $8\times 2y= 19y-9$

⇒ $16y=19y-9$

subtracting both side by (16y-9)

⇒ $3y= 9$

cross multiplying

We get, $y= 3$

y=3

∵x= 2y

$x=2\times 3= 6$

∴ x= 6

Therefore, the original number will be 36 as x is the unit number and y as tenth number.

6 0

3 years ago

Rearrange the formula to make x the subject: <br><img src="https://tex.z-dn.net/?f=y%20%3D%20%20%5Cfrac%7Bx%20%2B%202%7D%7Bx%20-

Lana71 [14]

Answer:

Rearranging Formula. This unit covers rearranging formulae. The manipulation of algebraic expressions is an important ... Changing the subject of a formula .

Step-by-step explanation:

8 0

2 years ago

​For which of the following correlations would the data points be clustered most closely around a straight line?

For which of the following correlations would the data points be clustered most closely around a straight line?