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 | 0.75 | 1 | 1.25 | 1.5 |
y | 80 | 65 | 55 | 45 | 40 |
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