The table in Exercise gives data from a function that is approximately exponential.
Exercise
a. First use the exponential regression facility of your calculator to find the exponential model of the form y = a·bx that best fits these points Find a and b accurate rounded off to three decimal places.
b. Calculate the average error in this optimal exponential model.
x | 0 | 5 | 10 | 15 | 20 |
y | 1000 | 775 | 600 | 465 | 360 |
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