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3 years ago

In which scatter plot is the vertical line placed correctly when using the divide-center method to find the regression line?

Mathematics

2 answers:

Grace [21]3 years ago

8 0

Answer:

there is an identical question

Step-by-step explanation:

Another question surged but in this occasion the correct answer is D

Ulleksa [173]3 years ago

6 0

Complete question:

Which step comes last when using the divide-center method to find the trend line on a scatterplot?

A Approximate the center of the cluster located on the left side of the line, and repeat for the right side of the line.

B Connect the two centers to produce the trend line.

C Disregard all outliers.

D Draw a vertical line so that each side has the same number of data points.

Answer:

The correct option is B

Step-by-step explanation:

There are three steps to find the trend line on a scatter plot after plotting the dots. These steps are:

STEP ONE:

Draw a vertical line so that each side has the same number of data points.

STEP TWO:

Mark with a special sign, the middle value in each of the two sets obtained in the previous step.

STEP THREE:

Join the two marks mentioned in the point with a straight line, and extend it to the edges of the graph. This line called the trend line and this is the last step.

So the answer is letter B.

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Verify the -(-x) = x for x= -21/31

aliina [53]

Answer:

-3

Step-by-step explanation:

because of the root

6 0

2 years ago

CAN SOMEONE PLEASE HELP WITH THIS ONE QUESTION? IM GONNA GET IN TROUBLE LOL

Nostrana [21]

Answer:

Step-by-step explanation:

I'll help you just let me figure this out real quick, do you still want the answer?

8 0

4 years ago

PLZ HELP ASAP! WILL GIVE BRAINLIEST AND 30 POINTS!!

Elis [28]

ANSWER
Group A

Step by step explanation
I am bad at explaining things
If we want to find The group with the youngest age , we have to find the mean. The mean , means that we add up all the numbers ( the age) ,then divide them with how much number you added . For example, we add the age of group A 9+10+10+10+10+10+10+10+15+15+15+15+15+15+15+15+17+17+17+17+17+17+17+17+19+19+19+19+19+19=449
Than Count how many people are in group A , group A have 30 people that the number you will be dividing
So 449 divided by 30 is 14.966
That the average

The same go for group B
10+10+10+10+10+10+14+14+14+14+14+18+18+18+18+18+18+25+25+25+25+25+28+28+28+28+29+29+29+29=519

There 30 peoples in group B
519 divided by 30 is 19.7
So the Average of groupB is 19.7

Group a is 14.9 and group B is 19.7
Group A average is smaller than Group B that means ,The average of Group A is younger than Group B so the answer will be group a

Group A is the younger Group then group B

3 0

3 years ago

Which expression is the additive inverse of n?<br> A. 1/n<br> B. -n<br> C. -1/n<br> D. -(-n)

Marrrta [24]

The additive inverse of something is whats added to the original to get 0

So in this case n - n = 0, which is B :)

6 0

4 years ago

Read 2 more answers

The length of a swimming pool is 3 feet longer than it’s width. The swimming pool is surrounded by a deck that is 2 feet wide an

Firlakuza [10]

Answer:

The Length of swimming pool is 8.35 feet

The width of swimming pool is 5.35 feet

Step-by-step explanation:

Given as :

The length of swimming pool is 3 feet longer that its width

Let The width of swimming pool = w feet

So, The Length of swimming pool = L = (w + 3) feet

Now, The swimming pool is surrounded by deck of 2 feet wide

The width of deck = w' = w + 2 + 2 = (w + 4) feet

The area of deck = 116 feet²

The length of deck = L' = L + 2 + 2 = (L + 4) feet

So, L' = (w + 3 + 4) feet

I.e L' = (w + 7) feet

∵ The area of deck = 116 feet²

So , L' × w' = 116 feet²

(w + 7)× (w + 4) = 116

Or, w² + 4 w + 7 w + 28 = 116

Or, w² + 11 w - 88 = 0

Solving the quadratic equation as

ax² + bx + c = 0

So, w = $\dfrac{-b\pm \sqrt{b^{2}-4\times a\times c}}{2\times a}$

Or, w = $\dfrac{-11\pm \sqrt{11^{2}-4\times 1\times (-88)}}{2\times 1}$

Or, w = $\dfrac{-11\pm \sqrt{473}}{2}$

or, w = $\dfrac{-11\pm 21.7}{2}$

or, w = 5.35 , -16.35

The width of swimming pool = w = 5.35 feet

The Length of swimming pool = L = (5.35 + 3) feet = 8.35 feet

Hence, The Length of swimming pool is 8.35 feet

And The width of swimming pool is 5.35 feet

Answer

3 0

4 years ago