Mathematics High School

Describe the type of correlation each scatter plot shows. Draw a trend line that

models each data set and find the equation of that trend line.

Answers

Answer 1
The correlation is positive, negative and no correlation.
Answer 2

The correlation coefficients off both the scatter plots are mentioned above.

What is correlation?Correlation is a statistical measure that expresses the extent to which two variables are linearly related.The sample correlation coefficient is defined as

        [tex]${\displaystyle {\begin{aligned}r_{xy}&={\frac {\sum x_{i}y_{i}-n{\bar {x}}{\bar {y}}}{ns'_{x}s'_{y}}}\\[5pt]&={\frac {n\sum x_{i}y_{i}-\sum x_{i}\sum y_{i}}{{\sqrt {n\sum x_{i}^{2}-(\sum x_{i})^{2}}}~{\sqrt {n\sum y_{i}^{2}-(\sum y_{i})^{2}}}}}.\end{aligned}}}[/tex]

       where [tex]{\displaystyle s'_{x}}[/tex] and [tex]{\displaystyle s'_{y}}[/tex] are the uncorrected sample standard deviations of        

       X and Y.

Given are the scatter plot graphs as shown.

For the graph {1}, the correlation coefficient is positive and is in range of between 0.7 to 0.8

For the graph {2}, the correlation coefficient is negative and is in range of between -0.4 to 0.45

Therefore, the correlation coefficients off both the scatter plots are mentioned above.

To solve more questions on correlation, visit the link below -

https://brainly.com/question/28898177

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Describe The Type Of Correlation Each Scatter Plot Shows. Draw A Trend Line Thatmodels Each Data Set

Related Questions

What is 0.02349 written in standard form to 3 significant figures

Answers

Solve from right to left

[tex]\\ \sf\Rrightarrow 0.02349[/tex]

[tex]\\ \sf\Rrightarrow 0.0235\times 10^{-1}[/tex]

[tex]\\ \sf\Rrightarrow 2.35\times 10^{-3}[/tex]

Option C is correct

original price of a cd is 12.50. what is the price with a discount of 39%

Answers

Answer:

original price of a cd is 12.50. what is the price with a discount of 39%

Step-by-step explanation:

Please help me pleaseeee
I’ll give brainliest

Answers

Square root sign pie sign - 17
Sorry it’s not the best

True or False: Collection on account and sale of services for cash are considered cash inflows, while payment on account and payment of salaries are considered cash outflows from operating activities.

Answers

Answer:

true

Step-by-step explanation:

make this is helpful for you

182,000/907 step by step please

Answers

Answer:

200 R 600

or

200 600/907

Step-by-step explanation:

0 0 0 2 0 0

9 0 7 1 8 2 0 0 0

   − 0          

     1 8        

   −   0        

     1 8 2      

   −     0      

     1 8 2 0    

   − 1 8 1 4    

           6 0  

         −   0  

           6 0 0

         −     0

           6 0 0

Jenna works a job where her pay varies directly with the number of hours she has worked. In one week, she worked 35 hours and made $274.75. How many hours would she need to work in order to earn $337.55?

Answers

274.75/35= $7.85 per hour
337.55/7.85= 43 hours

answer this please

as percentages

Answers

Where is the question??

My question that I need help on

Answers

Answer:

Step-by-step explanation:

In a teacher's math course, a linear regression line was calculated to predict
a student's final exam score from the score he received on the midterm. The equation was
Y = 25.5 + 0.82 where y is the final exam score and x is the score on the midterm. AJ scored 90 on the first test. AJ actually scored 99 on his final exam. What is the value of his residual?

A. -1.5
B. 1.5
C. 95
D. 97.5
E. None of these

Answers

The given equation is the best line that approximates the linear

relationship between the midterm score and the score in the final exam.

AJ's residual is 0.3, which is not among the given options, therefore, the correct option is. E. None of these.

Reasons:

The given linear regression line equation is; [tex]\hat y[/tex] = 25.5 + 0.82·[tex]\mathbf{\hat x}[/tex]

Where;

[tex]\hat y[/tex] = Final exam score;

[tex]\hat x[/tex] = The midterm score;

AJ score in the first test, [tex]\hat x[/tex] = 90

AJ's actual score in the exam = 99

Required:

The value of AJ's residual

Solution:

By using the regression line equation, we have;

The predicted exam score, [tex]\hat y[/tex] = 25.5 + 0.82 × 90 = 99.3

The residual score = Predicted score - Actual score

∴ AJ's residual = 99.3 - 99 = 0.3

AJ's residual = 0.3

Therefore, the correct option is option E;

E. None of these

Learn more about regression line equation here:

https://brainly.com/question/9339658

https://brainly.com/question/7361586

https://brainly.com/question/14747095

Find the surface area of a cylinder with radius 8m and height 5 m

Answers

Answer:

A≈653.45

Step-by-step explanation:

Solution

A=2πrh+2πr2=2·π·8·5+2·π·82≈653.45127

PLEASE I AM IN DESPERATE NEED OF HELP

Answers

Answer:

A

Step-by-step explanation:

The open side means thats number is bigger. Ex: 1 < 2 or 2 > 1

Hope that helps

please help i will mark brainliest

Answers

Answer:

. (5,20)

Step-by-step (x,y)=(5,20)

5, 20



Hope this helps

Replace the emojis with the correct numbers! Each emoji is worth the same amount each problem. (Example: Snowman is worth the same in each problem)

☃️ + ⭐ = 20
+ ☃️ = 8
⭐ = ?

Answers

⭐️ = 12
Hope this helps!

4. Find the difference. (-7p + 10) - (p + 12)

Answers

Answer:

-8p -2

Step-by-step explanation:

(-7p + 10) - (p + 12) =

-7p + 10 - p - 12 =

-8p -2

If a - 5b - 3 = 8, then the straight line ax + by + c = 0 must pass through the point
I) (1, 5)
II) (1, -5)
III) (5, -1)
IV) (-1, 5)
Please show your work...No spam.. Thank you.​

Answers

Answer:

III) (5, -1)

Step-by-step explanation:

Given relationship between the constants of the line ax + by +c = 0:

a - 5b - 3c = 8

We can try options, the obvious one is:

a = 0, b = - 1, c = - 1

In this case the line becomes:

0x - y - 1 = 0y = - 1

This gives us the point (5, - 1), the option III

PLEASE HELP I BEG IMMA FAILLLLLLLLL

In the gift shop of the History of Flight museum, Elisa bought a kit to make a model of a jet airplane. The actual plane is 21 feet long with a wingspan of 17.5 feet. If the finished model will be 12 inches long, what will the wingspan be?

Answers

Answer:

2 inches make a foot, therefore the scale model is 1/21 the size of the actual if you're using the information given above. so the wingspan should be 10

Hope I Helped You:)

Which of the following is an irrational number?
A
64−−√

B
90−−√

C
25−−√

D
169−−−√
please help

Answers

Answer:

sqrt(90) is irrational

Step-by-step explanation:

sqrt(64) = 8

sqrt(90) = 3 sqrt(10)

sqrt(25) =5

sqrt(169)=13

The only one that is not simplified to an integer is sqrt(90)

sqrt(90) is irrational

4x−1<11 answer my question

Answers

Answer:

Step-by-step explanation:

evaluate (2x+3y)2 solve​

Answers

Answer:

[tex]4x+6y[/tex]

Step-by-step explanation:

[tex]2\left(2x+3y\right)[/tex]

[tex]2\times \:2x+2\times \:3y[/tex]

[tex]4x+6y[/tex]

[tex]\boxed{\bold {HOPE\: IT\: HELPS\: :)}}[/tex]

my explanation is written in the image, i hope it helps !

5x=30
AAAA
Help.. -v-

Answers

Answer:

x equals 6:

5x=30

x=30/5

x= 6

Answer:

x=6

Step-by-step explanation:

to help you understand whatever you do on one side you do on the other so

in this case to find x we need to divide x by 5 and if we divide x by 5 we also

need to divide 30 by 5

∵5x=30

∵5x÷5=30÷5

∵x=6

What is the perimeter of triangle ABC with coordinates of A(3,4), B(3,11), C(27,4)

Answers

Answer:

Is there supposed to be a picture or no?

Step-by-step explanation:

The sum of two numbers is 48.when the smaller number is subtracted from the larger number,the difference is 12. What are the two numbers

Answers

Answer:

The two numbers are:

30 and 18

Step-by-step explanation:

a + b = 48

a - b = 12

From the first eq.

a = 48 - b

Replacing this last value in the second eq.

(48 - b) - b = 12

48 - 2b = 12

48 - 12 = 2b

36 = 2b

36/2 = b

18 = b

from the first eq.

a + 18 = 48

a = 48 - 18

a = 30

Check:

from the second eq.

a - b = 12

30 - 18 = 12  

PLEASE HELP ME GUYS!!

Answers

this is your answer hope it's helpful for you


A mistake was made in the steps shown to simplify the expression. Which step includes the mistake?
1732 + |-101 = 2
+
Step 1: = 1 + 9 + 10 = 2
+
Step 2= *** + 10 = 2
1 +9
10
Step 3: = 5 + 10 = 2
Step 4: =
2 + 10 = 2
Step 5: 12 = 2
Step 6: = 6
O A Step 4
OB. Step 1
OC Step 3
OD. Step 5

Answers

Answer:

Step 3.

Step-by-step explanation:

In step 3, he/she should've divided 10 by 2 instead of adding 1/5 to 9/5.

Conclusion:

Therefore, Step 3 includes the mistake.

Hoped this helped.

[tex]GeniusUser[/tex]

Answer are all correct

No files please help me on this for math

Answers

Answer:

y=3x+8

Step-by-step explanation:

Answer:

y=1.5x+11

Step-by-step explanation:

help QUICK PLS 12 POINTS JUST PLS

Answers

Answer:

The answer is 8.025.

Hope that helps. x

Yup, the guy above me is correct.

can someone help me
question down below

Answers

Answer:

N||M, K||J

Step-by-step explanation:

N and M are both parallel to each other and || symbolizes that, same goes for K and J

What is 5 14/12 in simplest form

Answers

Answer:

the answer is probably 7/6

hope I am correct and if not I'm sorry

pls help this is homework

Answers

Answer:

ans 144

Step-by-step explanation:

hope this helps

Answer:

144

Step-by-step explanation:

First we can start by replacing x with the value (2)

[tex]120 + 18(2) - 3 {(2)}^{2} [/tex]

[tex]120 + 36 - 3(4)[/tex]

[tex]120 + 36 - 12[/tex]

Therefore the final answer is 144

What value of t makes the equation true?
tx3 = 12 x 6

Answers

Answer: 24

Step-by-step explanation:

tx3 = 12 x 6

3t = 12*6

3t = 72

t = 24

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