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Lostsunrise [7]
3 years ago
11

Which of the following statements are true? Select all that apply.

Mathematics
2 answers:
Goryan [66]3 years ago
8 0

<span>The correlation coefficient is a value that signifies correlation and dependence between two or more values. </span>The following statements are true:
- The correlation coefficient is a unitless number and must always lie between –1.0 and +1.0, inclusive.
- The correlation coefficient, r, gives us information about the strength and direction of a linear relationship between any two variables.
<span>- The larger r is in absolute value, the stronger the relationship is between the two variables.
</span>
Troyanec [42]3 years ago
6 0
<h2>Answer:</h2>

The correct statements are as follows:

Correlation coefficients are used to measure the strength, like weaker or stronger relationship between two variables.

The correlation coefficient is a unit less number and must always lie between –1.0 and +1.0, inclusive.

The correlation coefficient, r , gives us information about the strength and direction of a linear relationship between any two variables. We can say that r > 0 is a positive correlation and r < 0 is negative. |r| closer to 1 is a stronger correlation.

The larger r is in absolute value, the stronger the relationship is between the two variables.

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What is the factor tree of 99 and 165 and what is the GCF?
Shtirlitz [24]
99
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11 9
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3 3

165
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33 5
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3 11

GCF=3
5 0
3 years ago
What’s the correct answer for this?
VMariaS [17]

Answer:

Second option is the correct answer

(x+11)^2+(y+6)^2 = 324

Step-by-step explanation:

x^{2} +12y+22x+y^2-167=0\\x^{2}+22x +y^2 +12y-167=0\\(x^{2}+22x +121)-121 +(y^2 +12y+36)-36-167=0\\(x+11)^2+(y+6)^2-324 = 0\\\huge\red{\boxed{(x+11)^2+(y+6)^2 = 324}}\\

5 0
3 years ago
Read 2 more answers
Analyze the diagram below and complete the instructions that follow. Find the area of QRS.
11Alexandr11 [23.1K]

<u>Answer-</u>

<em>The area of QRS is </em><em>238.7</em><em> sq units.</em>

<u>Solution-</u>

According to properties of supplementary angles,

m\angle R+124=180\\\\m\angle Q+132=180

So,

\Rightarrow m\angle R=180-124=56,\ m\angle Q=180-132=48

As the sum of measurement of all the angles in a triangle is 180, so

\Rightarrow m\angle S+m\angle R+m\angle Q=180

\Rightarrow m\angle S=180-m\angle R-m\angle Q

\Rightarrow m\angle S=180-56-48=76

Then the area of the triangle will be,

\text{Area}=\dfrac{1}{2}qr\sin S

=\dfrac{1}{2}\times 21\times 23.43\times \sin 76

=238.7\text{sq.units}

8 0
3 years ago
1. Which of the following is the x-coordinate of the solution to the system shown below?
astra-53 [7]

Answer:

x=9

Step-by-step explanation:

Using elimination method.

Add equation 1 to equation 2

x + y = 11

x - y = 7

---------------

2x + 0 = 18

Divide both sides by 2

2x = 18

---- ----

2 2

x = 9

3 0
2 years ago
Put brackets in the calculation below to make it correct.<br><br> 15 - 4 x 2 + 1 = 3
bagirrra123 [75]
If you put brackets around (2+1), your method of working is: 
1) 15-4*(2+1)=3 
2) 15-4*3=3
3) 15-12=3
You don't need any more brackets, as the BIDMAS (brackets, Indices, division, multiplication, addition, subtraction) rule does the rest of the job for you. 
The answer is therefore: 15-4*(2+1)=3
3 0
2 years ago
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