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rjkz [21]
3 years ago
7

20 POINTS PLS HELP!!

Mathematics
1 answer:
erastovalidia [21]3 years ago
5 0
The correct couples are:
1) Lurking variable
Lurking variables are random variables related to the variables you want to study and which affect them. Their effect is often unnoticed (that is why they are lurking), but they make stronger or weaker the relationship between the explanatory and responsive variables.

2) Line of best fit
The "line of best fit" is the straight line that best represents the data in a scatter plot. The least squares method provides the steps needed to find which line minimize the difference between the expected and the observed values. Therefore, "line of best fit" and "least squares regression line" are synonymous.

3) Correlation coefficient
A correlation coefficient is a number that represents the statistical relationship between two variables. Pearson's coefficient r is a measure of the strength and direction of the linear relationship between two variables.  

4) Correlation
An association is, in statistics, any relationship between two variables. A correlation is a measure of how strongly two variables have a linear relationship with each other. Therefore, "correlation" and "association" are synonimous.

5) Causation
The term "causation" means that there is a "cause and effect" relationship between two events, meaning that one event occurs because an other event has occured. Hence, <span>there is a causal relationship between the two events.</span>
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NEED HELP ASAP
BlackZzzverrR [31]
1. 3375
2. 45
3. 14348907
4. 3375

but the 3 or 2 ???
3 0
2 years ago
Find the distance between the points (5, -5) and (-7,4).
abruzzese [7]

Answer:

<h2>The answer is 15 units</h2>

Step-by-step explanation:

The distance between two points can be found by using the formula

d =  \sqrt{ ({x1 - x2})^{2} +  ({y1 - y2})^{2}  } \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(5, -5) and (-7,4)

The distance between them is

d =  \sqrt{ ({5 + 7})^{2}  +  ({ - 5 - 4})^{2} }  \\  =  \sqrt{ {12}^{2}  + ( { - 9})^{2} }  \\  =  \sqrt{144 + 81}  \\  =  \sqrt{225}  \\  = 15 \:  \:  \:  \:  \:  \:

We have the final answer as

<h3>15 units</h3>

Hope this helps you

4 0
2 years ago
HELP ME PLEASE!<br><br> I need HELP!
vivado [14]

Answer:

103⁰

Step-by-step explanation:

straight line= 180⁰

180⁰-77 = 103⁰

5 0
2 years ago
How can I solve this?
kogti [31]

Answer ok so lets say every 1/3 is one and a  half one-acre lawn, of course 2/3 would make 3 lawns, so maybe a full tank can cut 4 and a half lawns

Step-by-step explanation:

sorry if im wrong

7 0
2 years ago
Read 2 more answers
Triangles E F G and K L M are shown. Angles E F G and K L M are congruent. The length of side K L is 6, the length of side M L i
Masteriza [31]

Answer:

The Answer is C: Yes, △EFG~ △KLM by SSS or SAS

Step-by-step explanation:

SSS is for side-side-side

Both triangles have all three sides given, so the SSS similarity theorem is one way to prove these triangles are similar.

SAS is for side-angle-side

Both triangles have one angle measurement given, and two side lengths given, therefore we can also use the SAS similarity theorem to prove the two triangles are similar.  

Since both SSS and SAS work to prove the triangles are similar, the correct answer is C: Yes, △EFG~ △KLM by SSS or SAS

(I also just answered this question on the assignment and got it correct)

3 0
3 years ago
Read 2 more answers
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