Which quadratic regression equation best fits the data set?

Mathematics

2 answers:

g100num [7]3 years ago

7 0

The 4th selection is appropriate.

_____
Desmos.com has a wonderful graphing calculator. They also have apps for Android and iOS phones and tablets. Of course, your TI-83/84 or equivalent will do this, too.

liberstina [14]3 years ago

7 0

Answer:

D. $y=1.87x^2-5.16x+10.54$

Step-by-step explanation:

The data set is given by,

x y

1 5.9

2 8.9

3 13.4

4 20.1

5 30.1

6 45.1

7 67.7

Using the regression calculator, we see that,

<h3>The quadratic equation that best fits the data is $y=1.87x^2-5.16x+10.54$ as shown below.</h3>

Thus, option D is correct.

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which equation below represents the data in the table and PLEEEEASE show each and every step of how to solve I will make you the

kari74 [83]

The equation which represents the data in the table as in the task content is; Choice C; y = 2x +3.

<h3>What is the equation which represents the data in the table as attached?</h3>

It follows from the task content that the slope of the relation can be determined by means of the slope formula for a linear equation as follows;

Slope = (1-(-1))/(-1 -(-2))

Slope = 2.

Hence, the equation which represents the function is;

2 = (y-(-1))/(x -(-2))

2x + 4 = y +1

y = 2x + 3.

Therefore, the equation which represents the data in the table as in the task content is; Choice C; y = 2x +3.

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8 0

2 years ago