6. A set of data points has a correlation coefficient r = -0.86. Your friend claims

that because the correlation coefficient is close to -1, it is reasonable to use the

line of best fit to make predictions. Is your friend correct? Explain your reasoning.

Answers

Answer 1

Answer:

Yes

Step-by-step explanation:

The line of best fit is used in linear regression models to make predictions, the line of best fit gives the relationship between the dependent and independent variables by obtaining the Coefficient of correlation. The Coefficient of correlation is a value which ranges from - 1 to 1. With values close to either - 1 or 1 depicting a strong negative and positive relationship respectively. Hence, with a correlation Coefficient of - 0.86, which signifies a strong negative relationship, then we can go ahead and make prediction using the model.


Related Questions

Mr.Afzal bought an article for Rs4400 for 3years at 8 percent what was the interest charge?

pls solve this question iwill mark as brainlist.​

Answers

[tex]\large\underline{\underline{\red{\rm\blue{\longmapsto} Step-by-step\: Explanation:-}}}[/tex]

Here , the given data is :

Principal = Rs 4400 . ( P )Time = 3 years . ( T ) Rate of Internet = 8% . ( R )

We can calculate Simple Interest using ,

[tex]\boxed{\purple{\bf Simple\: Interest=\dfrac{P\times\:R\:\times\:T}{100}}}[/tex]

On substituting the respective values ,

⇒ SI = P × R × T / 100.

⇒ SI = Rs 4400 × 8 × 3 / 100 .

⇒ SI = Rs 44 × 8 × 3 .

SI = Rs 1,056 .

Hence the required Interest is Rs 1,056.

The larger of two numbers is equal to three times the smaller.if twice the larger is added to three times the smaller, the sum is 27.Find the anwser

Pls help thank you

Answers

Answer:

           These numbers are 3 and 9

Step-by-step explanation:

x - smaller number

3x - three times the smaller number = the larger number

2×3x - twice the targer number

2×3x+3x  - twice the larger is added to three times the smaller

2×3x + 3x = 27

6x + 3x = 27

  9x = 27

 ÷9     ÷9

   x = 3

3x = 3×3 = 9

Jackie worked 7.5 hours yesterday. If she earns $8.05 an hour, how much did she earn yesterday?

Answers

Answer:

$56.50

Step-by-step explanation:

I think. Something close to that.

Answer:

Hi there!

Your answer is:

Estimated to 60.38$

Step-by-step explanation:

7.5 hrs yesterday

8.05$ per hour

7.5hrs * 8.05dollars per hour = 60.375$

Estimated to 60.38$

what is 5+5= because i have no clue

Answers

Answer:

5+5=10

Are you a student of class 1??

help pleassseeeeee nowwwwww

Answers

328 multiplied by 10 so 3,280
if it is 10$ per ticket and there is a maximum of 328 people- they would make 3280$

find the line of the equation that passes through (3, -4) and is parallel to 3x + y + 2 = 0
leave your answer in the form of y = mx + c

Answers

hi

3x+y +2 = 0   so   y = -3x-2

parrallel  line has the same slope , so  is  -3x

then  :     -3 (3) +c  = -4

               -9 +c = -4

                 c = -4 +9

                 c = 5

so parallel is   : y=   -3x +5

The picture is above. PLEASE HELP.

Answers

The answer is -28. You simply plug in 4 into the x values (:

Answer:

f(4) = -28

Step-by-step explanation:

f(x) = -[tex]x^{2}[/tex] - 6x + 12

f(4) = -[tex]4^{2}[/tex] - 6(4) + 12

f(4) = -16 - 24 + 12

f(4) = -40 + 12

f(4) = -28

I got a few 1000 more lol :')

Answers

Answer:

92

Step-by-step explanation:

Start with the first sentence. 7 crates of 12 eggs each and you need to find out how many eggs that is; that's just 12 + 12 + 12 + 12 + 12 + 12 + 12, or 12 * 7, which equals 84.

Real question is: how many do they have now? Well, if they had 8 eggs at first and they just bought 84 more, then the answer is just 8 plus the 84 that they just bought, which is 92.

Please mark as Brainliest! :)

Answer:

Your correct answer is that they now have 76 eggs left.

Step-by-step :

So, to start off, they had 7 boxes with each box with 12 eggs. So multiply 7 by 12.

7 x 12 = 84

Now, they ate 8 eggs.

84 - 8 = 76 eggs

3(4x-7)=27
What does x =?
Please help asap im timed!!!

Answers

Answer:

x = 4

Step-by-step explanation:

3 x ( 4x -7 ) = 27

3 x 4x = 12x

3 x -7 = -21

12x -21 = 27

12x -21 + 21 = 27 + 21

12x = 48

12x/12 = 48/12

x = 4

Find the square root of 38 rounded to 3 decimal places

Answers

Answer:

6.1

Step-by-step explanation:

Answer:

6.164? idkr sorry

Step-by-step explanation:

The density of matter is calculated using the formula p = ", where p is the density in grams per cubic centimeter, m
is the mass in grams, and V is the volume in cubic centimeters. If a sample of 105 grams of silver has a density of 10.5
grams per cubic centimeter, what is the volume of the sample, in cubic centimeters?
0.01
O 0.1
O
1
10

Answers

Answer:

Volume = 0.1 cu. cm.

Step-by-step explanation:

p = m V

where p = 10.5 grams/cu. cm.

          m = 105 grams

plugin values into the equation:

10.5 grams/cu. cm. = 105 grams V

V = 10.5 grams/cu. cm.

         105 grams

V = 0.1 cu. cm.

Chantel counted 48 books on 6 shelves in the library. How many books would she expect to count on 12 shelves?

Answers

Start by finding out how many books per shelf. So divide 48 by 6, which would mean 8 books per shelf.
Multiply this by 12 shelves, which gives you 96 books.
Hope this helps!!

The poetry club had its first bake sale and they made 79.35 dollars. The club members are planning to have 4 more bake sales. Leslie said if we make the same amount at each bake sale we will earn 3,976.50 dollars. Peggy said no way we will earn 396.75 after bake sales. Use estimation to help Peggy explain why Leslie reasoning is incorrect.

Answers

Answer:

Peggy is correct, their total bakes sale = $396.75

Step-by-step explanation:

Using estimation to help Peggy explain why Leslie reasoning is incorrect.

From the question we can see that:

First bake sale they made = $79.35

4 more bake sales making the same amount = 4 × $79.35

The total amount they would make from the bake sales =

$79.35 + (4 × $79.35)

= $396.75

Peggy was right. Leslie's reasoning was incorrect.

Through (1,-4) Slope = -8
A. Rewrite the equation of the line in slope intercept form
B. Identify the slope and y intercept
(Show steps )

Answers

Answer:

Rewriting the equation in slope intercept form is: Y= -8x+4

Step-by-step explanation:

Im sure there's a faster way to solving this, but I'm just in 8th grade so I'm gonna apply what I know so far.

First of all, we know that our slope is -8... so we have y= -8x so far

From here, to find out y intercept I knew that our slope deals with all the points assigned, therefore we know that from -4 the change would be -8 so we get -12. We can also go the other way. This means that we plus 8 to get positive 4. (Side note: the change in our x value is 1 so we know that our y intercept is always dealing with a 0 in the x position) ex. (0,9) the y intercept would be 9.

To wrap things up, the slope is -8 and the y intercept is 4.

We then get Y= -8x+4

Hope this helps! :)

why is math so hard to me but easy for everyone else what division like 31 / 16 is very hard for me ​

Answers

31/16 = 1.93

All you have to do is figure out how many times 16 goes into 31 which in those case is ALMOST 2 times but 1.93 is the answer it is and it is off by .07

A taxi service charges you $1.50 plus $0.60 per minute for a trip to the airport. The distance to the airport is 10 miles, and the total charge is $13.50
How many minutes did the ride to the airport take?

Answers

The taxi ride should be twenty minutes long

Answer:

20 minutes

Step-by-step explanation:

The question can be shown like so, 1.5+0.6x

Since the total charge was 13.5, you can write an equation

13.5=1.5+0.6x

Simplify using property of subtraction

13.5 - 1.5= 1.5 - 1.5 + 0.6x

12 = 0.6x

Simplify using property of division

12/0.6= 0.6x/0.6

x=20

Write 1/4x-3/4y=-1 in standard form
work out


need asap


please

Answers

Answer:

The Answer Should be x-3y=-4

Step-by-step explanation:

Write 68,127,000,000,000,000 in scientific notation. (x10^​

Answers

Answer:

6.8127 × 10^16

Step-by-step explanation:

Hope this helps:)

Answer:

6.8127 *10^16

Step-by-step explanation:

Scientific notation is a way to make these numbers easier to work with. In scientific notation, you move the decimal place until you have a number between 1 and 10. Then you add a power of ten that tells how many places you moved the decimal.

If ΔMTV is reflected across the y-axis, what are the resulting coordinates of point M?

(-2, -5)
(-2, -5)

(5, -2)
(5, -2)

(-2, 5)
(-2, 5)

(-5, 2)
(-5, 2)

Answers

The answer is A (-2,5).

HOPE IT HELPS (◕‿◕✿) SMILE!!

find the next terms
I, II, III, IV, V, ___, ___, ___, ___, ___

whats the conjecture?
______________

Answers

I, II, III, IV, V, VI, VII, VIII, IX, X. i don't exactly know what the conjecture means


hiiiiii i need help

Answers

Answer:

3 goes with 8 and 5 goes with 2

Step-by-step explanation:

I hope this helps!

The answer is 8&3 5&2. That’s the consecutive interior angles

how would i solve (4x 3 + 7y 3z 4) 2 ?

Answers

Answer:

=(4x*3+7z*3z*4)*2

=(12x +84z²) *2

ans =24x+168z²

Step-by-step explanation:

ur question is wrong i guess check it plzz

In a world problem, the rate of change is
A. the y-intercept
B. the initial value
C. the slope of linear equation
D. the y-value

Answers

Answer:

the y intercept is the right answer

Two sides of a right triangle measure 2 units and 4 units. What is the area of the square that shares a side with the third side of the triangle?

Answers

Answer:

The area of the square is 12 squares unit

Simplify 2(x+3)-2(x-6)

Answers

Answer:

18

Step-by-step explanation:

=(2)(x)+(2)(3)+(−2)(x)+(−2)(−6)

=2x+6+−2x+12

Combine Like Terms:

=2x+6+−2x+12

=(2x+−2x)+(6+12)

Answer:

2 (x+3) -2 (x-6) =18

Step-by-step explanation:

2 (x+3)= 2x+6

=2x+6-2 (x-6)

-2 (x-6)= -2x+12

=2x+6-2x+12

=2x-2x+6+12

6+12

=18

The number 0.003 writte in scientific notation is 3x10^3. why is the exponent negative?

Answers

Answer:

Answer is the explanation below

Step-by-step explanation:

The exponent is negative because, as a positive exponent means to multiply, a negative exponent means to divide.

What is this slope ?

Answers

-1/4
it’s negative because it’s going down

Charlie's rectangular swimming pool has a volume of 600 cubic feet. The neighbor's
pool has the same length and height, but the width is three times larger. What is the
volume of the neighbor's pool?
A 1200 cu ft
B 1800 cu ft
C 603 cu ft
D 200 cu ft

Answers

B definitely, since the volume equation is (h)(w)(L). Having one of these values multiplied by 3 , then it’ll be 3 times the amount of the of Charlie’s pool

What is -4x<8. I’m a little confused.

Answers

Answer:

x > -2

Step-by-step explanation:

The graph represents the balance on Harrison’s car loan in the months since purchasing the car.

Answers

Answer: It’s A

Step-by-step explanation:

Answer:

A,the loan balance decreases $500 per month.

Step-by-step explanation:

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