You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is 0. How confident can you be that your predicted value will be reasonably close to the actual value?
Responses

I can’t be confident at all; this is about as close to a random guess as you can get.

I can be a little confident; it might be close, or it might be way off.


I can be very confident; it will be close, but it probably won’t be exact.

Answers

Answer 1

The correct option regarding the correlation coefficient is that A. I can’t be confident at all; this is about as close to a random guess as you can get.

What is a correlation coefficient?

The correlation coefficient is a statistical measure of the strength of a two-variable linear relationship. Its values can range between -1 and 1. A correlation coefficient of -1 denotes a perfect negative, or inverse, correlation, in which values in one series rise while those in the other fall, and vice versa.

A coefficient of one indicates that there is a perfect positive correlation, or a direct relationship. A correlation coefficient of 0 indicates that no linear relationship exists. In science and finance, correlation coefficients are used to assess the degree of association between two variables, factors, or data sets.

In this case, the fat that the person gets 0 implies that it's probably a random guess. In conclusion, the correct option is A.

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Related Questions

On September 16th you bought 2,500 shares of the stock you have chosen to follow this year,
along with 1,100 shares of Home Depot, 3,500 shares of Ford, and 900 shares of JetBlue.
Create a stock ticker to represent these trades.

Answers

The stock markets utilize "Ticker Symbols," which are distinctive one- to five-letter codes, to uniquely identify companies.Because stock quotes used to be printed on a ticker tape machine that resembled the images below, it is known as a ticker symbol.

Create a stock ticker to represent these trades ?A tracking stock is unique equity offered and issued by a parent company that tracts the financial performance of a segment of the division.Tracking stocks usually trade in open markets separate from the parent company's stock.An example of tracking stock is:Walt Disney Company's subsidiary which it owns fully named: go.com. The company is also known as The Go Network. The stock symbol is GOT.Its P/E Ratio is 11.38XI chose this stock because its parent company has a very strong brand and great leadership.Price/Earnings Ratio is used for establishing the value of a company. It measures the current share price against it's earnings per share (EPS).

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algebra 2 please help!!

Answers

Answer:

A

Step-by-step explanation:

Translation of 3 units is a plus 3 away from the x

please help me out. it’s more as well but here

Answers

Answer:

[tex]\sf \dfrac{-1}{2}[/tex]

Step-by-step explanation:

Find the slope:

(-9 , -5)   ⇒ x₁ = -9  ; y₁ = -5

(-1 , -9)   ⇒ x₂ = -1   ; y₂ = -9

[tex]\sf \boxed{Slope = \dfrac{y_2-y_1}{x_2-x_1}}[/tex]

           [tex]\sf = \dfrac{-9-[-5]}{-1-[-9]}\\\\\\=\dfrac{-9+5}{-1+9}\\\\\\=\dfrac{-4}{8}\\\\\\=\dfrac{-1}{2}[/tex]

Answer:

Slope = -1/2

Step-by-step explanation:

Formula we use,

→ (y2 - y1)/(x2 - x1)

Now the value of slope is,

→ (-9 -(-5))/(-1 -(-9))

→ (-9 + 5)/(-1 + 9)

→ -4/8 = -1/2

Hence, the slope is -1/2.

PC=3x+7, can you find PC?

Answers

The value of PC is 40 when C is the circumcenter of triangle PQR.

Given that,

Consider the complete question is

C is the circumcenter of triangle PQR.

PC=3x-7

RC=5x-15 &

QC= 51-x

We have find the side PC.

A triangle's vertices are equidistance spaced from its circumcenter.

PC=RC=QC

RC=QC

5x-15= 51-x

5x+x= 51+15

6x=66

x=11

The value of x is 11.

We must determine PC's worth.

Substitute x=11 in the above equation.

PC= 3x+7

PC= 3(11)+7

PC=33+7

PC= 40

Therefore, The value of PC is 40 when C is the circumcenter of triangle PQR.

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1: A is directly proportional to B.
When A = 12, B = 3
Direc
(a) Find a formula for A in terms of B.
(b) Find the value of A when B = 5
(c) Find the value of B when A= 36

Answers

Answer:

a)A=4B

b)A=20

c)B=9

If it is directly proportional it means that A=kB.

you can substitute the numbers to find k.

12=k3

k=4

so the formula is A=kB.

For part b and c it is just substitution

Could someone help me out, please?

Answers

Answer:

For x = -2, y would equal -3.

For x = -1, y would equal -2.

For x = 0, y would equal -1.

For x = 1, y would equal 0.

For x = 2, y would equal 1.

Step-by-step explanation:

So what we have to do is plug in the x-values from the table into the equation.

1) y = -2 -1 => y = -3

2) y = -1 - 1 => y = -2

3) y = 0 - 1 => y = -1

4) y = 1 - 1 => y = 0

5) y = 2 - 1 => y = 1

Evaluate Each expression show your work


1. Evaluate 3 + 4x if x = 5

Answers

Answer:

23

Step-by-step explanation:

3+4x

3+4(5)

3+20

23

Hopes this helps please mark brainliest

The toy store created a display of s shelves of remote control cars. Each shelf contains 16 cars. Write an expression that shows how many cars are on the display.

Answers

The expression that shows number of remote control cars on the display self is 16s.

Mathematical expressions are formed using at least two numbers,  variables, and there must be one arithmetic operation, and a statement. If there are x items are given in one self and there are n number of self and we have to find total number of items in all self, then we have to multiply x by n.

Here, there are 16 remote control cars on a display self. The number of display shelves is s.

So, the total number of cars will be 16 times of s.

Number of cars on display = 16s

Therefore, the expression that shows the number of cars on display is 16s.

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Answer:

It is 16s

Step-by-step explanation:

Please help me!!! I’m really trying…

Answers

Answer would be D, (11,-3)

How can 33 over 9 be expressed as a decimal?

Answers

Hi I think it’s 3.6 the second one

Answer:

3.6

................................

Graph the image of rhombus ABCD after a rotation 270° counterclockwise around the origin.

Answers

After rotation, the coordinates of the vertex of the rhombus become:

A(-8,-6)B(-3,-6)C(0,-10)D(-5,-10)

How to rotate an image 270°?We refer to the process of rotating an object about a fixed point or line as rotation. By rotating an object, we might be able to fit it into a specific location or even learn more relevant details about the current activity. When an object is rotated, it seems as though its shape has changed, but it hasn't.

We know ,  when a point (x,y) rotates 270° counterclockwise about the origin, our point (x,y) becomes (y,-x)

From the graph the coordinates of the vertex of the rhombus are:

A(6,-8)B(6,-3)C(10,0)D(10,-5)

Therefore after rotation, the coordinates of the vertex of the rhombus become:

A(-8,-6)B(-3,-6)C(0,-10)D(-5,-10)

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Patel is solving 8x2 + 16x + 3 = 0. Which steps could he use to solve the quadratic equation? Select three options. 8(x2 + 2x + 1) = –3 + 8 x = –1 Plus or minus StartRoot StartFraction 5 Over 8 EndFraction EndRoot x = –1 Plus or minus StartRoot StartFraction 4 Over 8 EndFraction EndRoot 8(x2 + 2x + 1) = 3 + 1 8(x2 + 2x) = –3

Answers

The solution of the quadratic equation will be;

⇒ x = - 1 ± √5 / 8

⇒ x = –1 Plus or minus Start Root Start Fraction 5 Over 8 End Fraction End Root.

What is Quadratic equation?

An algebraic equation with the second degree of the variable is called an Quadratic equation.

Given that;

The quadratic equation is,

⇒ 8x² + 16x + 3 = 0

Now,

Solve the equation as;

⇒ 8x² + 16x + 3 = 0

⇒ 8x² + 16x = - 3

⇒ 8 (x² + 2x) = - 3

Now, Using completing the square as;

⇒ 8 (x² + 2x + 1) = - 3 + 8

⇒ 8 (x + 1)² = 5

⇒  (x + 1)² = 5 / 8

⇒ (x + 1) = ±√5 / 8

⇒ x = ±√5/8 - 1

⇒ x = - 1 ± √5/8

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There is a line that includes the point (-1, 1) and has a slope of 9. What is its equation in slope-intercept form?​

Answers

Answer:  would be y=9x+10

Step-by-step explanation: Use the point slope form

would you break a ten or a hundred when you subtract 282-47

Answers

I would break a ten when I subtract 282-47.

What is a ten?

This is the number after nine. it is a two-digit number. it is written as 10.

What is a hundred?

It is a number after 99. It is a three-digit number. It is written as 100.

What is subtraction?

This simply means taking away a number from another. its mathematical symbol is ( - ).

To subtract 282-47;

   282

-     47

=   235

we need to break a ten i.e ( eight- tens) to get a ten to add to two making it 12. then subtract (12 -7) = 5.

7 is now remaining in the tens column i.e( seven- tens). Then subtract (7-4) =3.

Then bring down the two in the hundreds column.

Therefore, 282-47 =235

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a rectangular storage area is to be constructed along a side of a building. a security fence is required along the remaining three sides of the area. what is the maximum area that can be enclosed with 703 ft of fencing?

Answers

The largest area that may be surrounded by fencing is 61776.13 m².

A building's side will have a rectangular storage room built into it. The remaining three corners of the space need security fencing.

The maximum area is enclosed within 703ft of fencing.

Let x = width

     L = length

The perimeter with 3 sides;

L + 2x = 703

L = (703 - 2x)

Let, Area = x * L

Now, replace L with (703 - 2x);

A = x * (703 - 2x)

A = 703x - 2x²

To get the max area by finding the axis of symmetry;

x = -b/2a

In this equation a = -2; b = 703

x = -703 / (2*-2)

x = 175.75m, ( width for the max area )

To get the max area, x=175.75;

A = -2(175.75²) + 703(175.75)

A = -61776.12 + 123552.25

A = 61776.13 m² is a max area

Hence, The maximum area that can be enclosed with 703ft of fencing is 61776.13 m².

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In one book, there are 15 lines per page. In another book, there are 90 lines in every 6 pages. Determine whether the ratios of lines to pages are proportional in both books.

Answers

The ratios of lines to pages are proportional in both books.

How to calculate the value?

From the information, in In one book, there are 15 lines per page.

In another book, there are 90 lines in every 6 pages. Therefore, the number of lines per page will be:

= Number of line / Number of page

= 90 / 6

= 15 lines per page

Therefore since they're the same for both books as we got 15 lines, they're proportional.

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- Lyra was trying to determine the slope ratio for the triangle at right, and she
says the answer is 2.675. Isiah claims that cannot be correct. Who is
right? How do you know?

Answers

Answer:

  Isiah is correct. The slope is about 0.344.

Step-by-step explanation:

Lyra and Isiah want the slope of the hypotenuse in a triangle with an angle of elevation of 19°.

Slope

The slope is the ratio of "rise" to "run". In a right triangle, that is the ratio "opposite"/"adjacent". This ratio is the tangent of the angle of elevation.

  tan(19°) ≈ 0.344

The slope is about 0.344. Isiah is correct.

Isiah knows Lyra is not correct because the slope in a triangle with a 45° angle is 1. Lyra' value of 2.675 is about right for an angle of 69.5°, much greater than either 45° or the given angle of 19°.

__

Additional comment

Unfortunately, the diagram is not drawn to scale. This is often the case with diagrams in geometry problems. The diagram here is misleading in that it seems to show a slope greater than 1 for a 19° angle.

1. (2ab^5)^4/ab^3
2. (x^3y^5/ab^7)^2
3. 5mn^7-1​

Answers

ANSWER :

[tex] \rm{1.)16a {}^{3}b {}^{17} }[/tex]

= (2ab^5)^4

= 2ab^5×2ab^5×2ab^5×2ab^5

= 16a^4b^9

= 16a^4b^9/ab^3

= 16a^3b^17

[tex] \rm2.) \frac{x {}^{6} y {}^{10} }{a {}^{2}b {}^{14} } [/tex]

= (x^3y^5)^2

= (x^6y^10)

= (ab^7)^2

= (ab^14)

= (x^6y^10)/ab^14

[tex] \rm3.)4mn {}^{7} [/tex]

= 5mn^7 - 1

= 4mn^7

What is the sign of 37 + (-37)?

Answers

Answer:

not positive or negative

Step-by-step explanation:

It is 0 but i would say it is positive nor negative :)

0, It not really postive or negative

37 + -37 = 0 =

Neither negative nor positive

:/

pls help me with this

Answers

Answer:

31-6/1-1

=25/0

=undefined

The quotient of x and 2 is less than or equal to 5.

Answers

\Step-by-step explanation:

convert to math form:

[tex]\frac{x}{2} \le5[/tex]

simplify:

[tex]x \le 10[/tex]

convert to word form(optional):

x is less than or equal to 5.

Which term is a constant numerical value? I need so much help​

Answers

a constant is a fixed value

There are 16 questions on a test. Karen got 4 wrong. What percent did she get right? ​

Answers

16-4=12
(12/16)x100=75 so she got 75% right

2x+2y=-22
5x +6y = -63

Answers

Answer:

Step-by-step explanation:

Find an equation to represent x or y

2x + 2y = -22

     -2y

2x = -22 - 2y

Divide by 2

x = -11 -y

Plug in the found equation

5 (-11 - y) +6y = - 63

- 55 -5y + 6y = - 63

-55 + y = - 63

+55

y = - 8

Plug in the y to find x

2x + 2(- 8) = - 22

2x - 16 = - 22

    + 16

2x = - 6

Divide by 2

x = - 3

Help me with these questions (all of them 1 to 19 )

Answers

Answer:

answer for 17 is 5+5+8which is 200 cm

Answer:

1 - 9p

2 - 4y

Step-by-step explanation:

1: 3p+2p+4p Since there all common terms you can just add them together! So it would be 9p!

2: 3y + (-y) + 2y

Lets make this easier to understand.

3y -1y + 2y (I added the one because the y technically is a 1.)

Since they are all like terms because they all have y it is pretty easy to solve now! So it would be 4y!

(WILL DO MORE LATER)

Refer to the figure below. M

Answers

The measure of the angle ∠C is 17°.

The angle having a measure equal to 32° and the angle ∠B form a linear pair. They are supplementary angles. When two lines cross, they generate a pair of neighbouring angles called a linear pair. A linear pair's two angles are always supplementary, which means their measurements add up to 180 degrees. The sum must be equal to 180°.

32° + ∠B = 180°

∠B = 180° - 32° = 148°

Now, we will use the angle sum property of a triangle. The sum of all the angles in a triangle is equal to 180°.

∠B + ∠C + 15° = 180°

148° + ∠C + 15° = 180°

∠C + 163° = 180°

∠C = 180° - 163° = 17°

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Which one of the following is NOT equivalent to 3/4? 16/24 15/20 6/8 24/32 PWEASE HURRY THESE ARE ALL MY POINTS

Answers

Which one of the following is NOT equivalent to 3/4?

16/24 = 2/3

15/20 = 3/4

6/8 = 2/3

24/32 = 3/4

Answer: 16/24 and 24/32 are not equivalent to 3/4

Step-by-step explanation:

Equivalent fractions represent the same value, even though they look different.

Here, when we convert every fraction to its simplest form, we can verify if they are equal.

(16/24) ÷ (8/8) = 2/3

(15/20) ÷ (5/5) = 3/4

(6/8) ÷ (2/2) = 3/4

(24/32) ÷ (4/4) = 6/7

As the simplest forms of 16/24 and 24/32 are not 3/4, they are not equivalent fractions of 3/4.

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Solve for y.
4y + 5/3=y-10/2


Answers

Answer:

y= -20/9

Step-by-step explanation:

4y+5/3=y-5

3y= -(5+5/3)

3y= -20/3

y= -20/9

Answer:

Collect like terms

4y-y=-10/2-5/3

3y=-5-5/3

5-5/3

LCM=3

3/1=3×5=15

3/3=1×5=5

15-5÷3

10/3

3y=10/3÷3

3y=30/3

y=10

a high school theater club has 40 student, 6 of whom are left handed. two student will be selected at random, one at a time without replacement. what is the pobability that the 2 student selected will both be left-handed/

Answers

1.92%   is the probability .

Describe probability using an example?

By dividing the number of preferable possibilities by the total number of potential outcomes, probability, which measures the likelihood that an event will occur, is obtained. The most basic illustration is a coin toss. There are only two outcomes that can occur when you flip a coin: either heads or tails.

The probability of an event is the ratio of the size of the event space to the size of the sample space.  

The size of the sample space is the total number of possible outcomes  

The event space is the number of outcomes in the event you are interested in.  

so  

Let

x------> size of the event space

y-----> size of the sample space  

so

  P = x/y

Find out the probability that the first student selected will be left-handed

we have

 x = 6

 y = 40

substitute

 P = 6/40

Simplify

P = 3/20

the probability that the second student selected will be left-handed

we have

    x = 6 - 1  = 4

y = 40 -1 = 39

substitute

 P = 5/39

the probability that the 2 students selected will both be left-handed

Multiply the probabilities

   P = 3/20(5/39)  = 15/780

Convert to percentage

Multiply by 100

15/780 * 100 = 1.92%

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Can you help me with this please. It was question on my test but it didn't make any sense since i got a repeating decimal.
3.5g-2.7g=-6

Answers

The solution of the linear equation 3.5g - 2.7g = -6 will be negative 7.5.

What is the solution to the equation?

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

If the maximum power of the equation is one. Then the equation will be a linear equation.

The linear equation is given below.

3.5g - 2.7g = -6

Simplify the equation, then we have

3.5g - 2.7g = -6

0.8g = -6

g = - 6 / 0.8

g = - 7.5

The solution of the linear equation 3.5g - 2.7g = -6 will be negative 7.5.

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