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To state: A sinusoidal model using a graphing calculator that gives D as a function t . The time t is measured in months, with
t | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
D | 24.5 | 27.2 | 36.9 | 48.1 | 59.8 | 69 | 73.5 | 71.8 | 63.9 | 51.9 | 40.7 | 29.6 |
The resultant answer is
Given information:
The given table is shown below:
t | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
D | 24.5 | 27.2 | 36.9 | 48.1 | 59.8 | 69 | 73.5 | 71.8 | 63.9 | 51.9 | 40.7 | 29.6 |
Explanation:
Consider the given table:
t | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
D | 24.5 | 27.2 | 36.9 | 48.1 | 59.8 | 69 | 73.5 | 71.8 | 63.9 | 51.9 | 40.7 | 29.6 |
First enter the data in a graphing calculator:
Make a
Now perform a sinusoidal regression, because the scatter plot appears sinusoidal:
Graph the model and the data in the same viewing window:
The model appears to be a good fit. So, a model for the data is:
Chapter 10 Solutions
Mcdougal Littell Algebra 2: Student Edition (c) 2004 2004
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