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Which equation best fits these data? PLEASE HELP

Which equation best fits these data? PLEASE HELP-example-1

2 Answers

7 votes

Answer:

C

Explanation:

Use a quadratic equation regression calculator.

Plugging in all the points, the equation should come somewhere close to


y=-0.32x^(2) -1.26x+15.81

Which is answer choice C.

User Duff
by
8.0k points
3 votes

Answer:

The correct option is C.

Explanation:

Answer:

The required quadratic regression model is
y=x^2-2x-3.

Explanation:

The given data points are (-6,12), (-4,15), (-3,17), (-1,17), (1,15), (2,11), (3,9), (4,6).

From the graph it is clear that the given data forms a U-shaped curve. It means we have to find the quadratic regression model.

The general form of quadratic regression model is


y=ax^2+bx+c

Using technology we get,


a=-0.32,b=-1.26,c=15.81

The required quadratic regression model is


y=-0.32x^2-1.26x+15.81

Therefore the correct option is C.

Which equation best fits these data? PLEASE HELP-example-1
User Qiqi
by
7.6k points

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