Project 2
Directions Find a avert graph or line graph in a newspaper, in a magazine or on the Internet. This graph must be one that can be effectively determineed by a quadratic, cubic, or quartic polynomial function.
The following bar graph was found in the web page of the Los Angeles Times
1.gens the independent (x) variable
The independent variable name (x) is classs
2. yell the dependent (y) variable.
The dependent variable name (y) is Change in California nonfarm employment
3.Make a data tabularize from the information in the graph by estimating coordinates for points on the graph.
Year200020012002200320042005200620072008
Change in California nonfarm Employment3.60.8-1.0-0.51.01.81.50.91.2
4.Make a line graph of the data.
5.Choose a polynomial vex for this data. develop how you selected form.
Due to the graph has up to three round points the function type is a Quartic Polynomial degree 4) with a equation as follows
f(x) = ax4 + bx3 + cx2 + dx + e
6.Do you expect the starring(p) coefficient for the fashion model be tyrannical or negative? Explain your expectation.
I expect that the leading coefficient for the model be positive due to the graph of f(x) rises both to the left and to the right and n (degree) is greater then 2.
7.Use the regression analysis take on your graphing electronic computer to find a polynomial model for the data.
Using the regression analysis feature in the graphing calculator TI-83, we obtained the following the polynomial model
f(x) = 0.016x4 - 130.17x3 + 3915127344x2 523356382x + 2.62*1011
8.Does the model you found confirm to your pilot light expectations. Did you alter the degree? If so, explain why you made the change.
Yes, the model that I found confirm to my original expectations. I did not alter the degree.
9.Comment of the validity of your model. Do you...If you want to recover a full essay, order it on our website: Orderessay
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