1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Svetach [21]
2 years ago
11

Need help with this math question

Mathematics
1 answer:
olga_2 [115]2 years ago
6 0

The correlation coefficient is -0.87; strong correlation

<h3>How to determine the correlation coefficient?</h3>

The given parameters are:

x = Time spent working out

y = lbs Overweight

Next, we enter the table of values in a graphing tool.

From the graphing tool, we have the following summary:

<u>X Values</u>

  • ∑ = 27.1
  • Mean = 2.71
  • ∑(X - Mx)2 = SSx = 22.569

<u>Y Values</u>

  • ∑ = 89
  • Mean = 8.9
  • ∑(Y - My)2 = SSy = 778.9

<u>X and Y Combined</u>

  • N = 10
  • ∑(X - Mx)(Y - My) = -114.19

<u>R Calculation</u>

r = ∑((X - My)(Y - Mx)) / √((SSx)(SSy))

r = -114.19 / √((22.569)(778.9))

r = -0.8613

Approximate

r = -0.87

This means that the correlation coefficient is -0.87

Also, the correlation coefficient is a strong correlation, because it is closer to -1 than it is to 0

Read more about correlation coefficient at:

brainly.com/question/27226153

#SPJ1

You might be interested in
Which expression represents the ratio of the difference of the two means to Sidney's mean absolute deviation
prohojiy [21]

Answer:

The ratio of the difference of the two means to Sidney's mean absolute deviation = \frac{4}{3.28} = 1.2195

Step-by-step explanation:

P.S - The exact question is -

Given - The means and mean absolute deviations of Sidney’s and Phil’s grades are shown in the table below.

                                       Sidney’s Grades           Phil’s Grades

Mean                                     82                                    78

Mean Absolute Deviation      3.28                                 3.96

To find - Which expression represents the ratio of the difference of the two means to Sidney’s mean absolute deviation?

Proof -

Given that Mean of Sidney Grades = 82

                 Mean of Phil's   Grades = 78

So,

The difference of two means = 82 - 78 = 4

Also,

Given, Mean Absolute Deviation of Sydney = 3.28

Now,

The ratio of the difference of the two means to Sidney's mean absolute deviation = \frac{4}{3.28} = 1.2195

4 0
3 years ago
154×35= can you show work
DochEvi [55]
The way to solve it is to put the 154 on top of 35 and multiply it to get the answer, 154 times 35 = 5390
5 0
3 years ago
Read 2 more answers
You are at a sandwich shop. You can choose from white or rye bread, turkey or ham, and Swiss or American
Gre4nikov [31]

Answer: The correct is answer is: The subset consists of all the sandwiches with either white bread and ham or rye bread and turkey.

Step-by-step explanation: I got this question correct.

6 0
3 years ago
Which of these is a simplified form of the equation 6y + 4 = 8 + 2y + 2y?​
sveticcg [70]

6y + 4 I guess is the answer for the question

6 0
3 years ago
Read 2 more answers
PLEASE HELP,
valina [46]
What we know:

3.14 pi
radius: 7in.
Result units: in^3, this is the results of in used for radius; no conversion needed
Formula volume of a sphere: (4/3)* pi * r^3

(4/3)(3.14)(7)(7)(7)
(4/3)(3.14)(343)
(4/3)(1077.02)
(1.3)(1077.02) \\repeated 3 infinite
1436.026666\\repeated 6inf

The volume of the sphere is about 1436.0266 in^3
5 0
3 years ago
Other questions:
  • Fred has 36 strawberries and 42 blueberries. He wants to use them to garnish desserts so that each dessert has the same number o
    7·2 answers
  • Which shows all the names that apply to the figure?
    14·2 answers
  • Cindy has a picture that is 3 inches wide and 4 inches long. She wants to enlarge it so that it is 12 inches long how wide will
    11·2 answers
  • What do black guys like in girls?
    11·2 answers
  • On a piece of paper, graph f(x)= {x if x&lt;2 2 if x&gt;2}
    13·1 answer
  • How do I find this? Please help.
    15·2 answers
  • Help will be appreciated I need help with math
    7·1 answer
  • 6x – 3y = -33<br> - 6x + 5y = 31
    13·1 answer
  • Pls Help! Which equation matches the given points?
    10·1 answer
  • A job applicant estimates that his chance of passing a qualifying examination is , and his chance of being appointed if he does
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!