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What is the quadratic regression equation for the data set?
A. yˆ=0.056x2+1.278x−0.886 B. yˆ=0.056x2+1.278
C. yˆ=0.056x2+1.278x
D. yˆ=0.056x2−1.278x−0.886

What is the quadratic regression equation for the data set A yˆ0056x21278x0886 B yˆ0056x21278 C yˆ0056x21278x D yˆ0056x21278x0886 class=

Respuesta :

unknownuscr

your answer is A. yˆ=0.056x2+1.278x−0.886

Answer:

Option:A is the correct answer.

The quadratic regression equation for the data set is:

    A.  [tex]y=0.056x^2+1.278x-0.886[/tex]

Step-by-step explanation:

We are given a set of data value as:

         x                y

         3             3.45

         5              6.9

         6             8.79  

         8             12.91

         10            17.48

         12            22.49

         15            30.85

On plotting these points on a scatter plot we see that the line that best fits these data points is a parabola i.e. the equation is a equation of a quadratic function.

The equation of the line of best fit is:

                   [tex]y=0.056x^2+1.278x-0.886[/tex]

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