Which of the following exponential regression equations best fits the data shown below?
X -4 -3 -2 -1 0 1 2 3 4
y 1.07 1.98 2.93 3 9 10 16 25 36
A. y 3.02 3.67*
B. y 6.61 1.55*
C. y 2.27 2.09*
D. y = 8.04.0.98*

Question

03-06-2022
Mathematics

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Which of the following exponential regression equations best fits the data shown below?
X -4 -3 -2 -1 0 1 2 3 4
y 1.07 1.98 2.93 3 9 10 16 25 36
A. y 3.02 3.67*
B. y 6.61 1.55*
C. y 2.27 2.09*
D. y = 8.04.0.98*

Sagot :

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Topeadeniran2idn Topeadeniran2idn · Answer 1 · 2022-06-14T16:50:06-04:00

The exponential regression equation that fits the data is D. y = 8.04.0.98ˣ.

How to depict the equation?

The quickest way is probably to do direct substitution. First, let's try f(0). The values of y predicted by the four equations are, respectively, 3.14, 5.32, 10.84, and 8.46.

From here, it looks like C and D are the closest to the observed data. Let's try f(4) on C and D.

10.84(1.77)⁴ = 10.84 × 9.815 = 106.4

8.46(3.51)⁴ = 8.46 × 151.4 = 1284

Therefore, the exponential regression equation that fits the data is y = 8.04.0.98ˣ.

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How to depict the equation?

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