Please answer the whole question.
(1) Let x be the age in years of a licensed automobile driver. Let y be the percentage of all fatal accidents (for a given age) due to speeding. For example, the first data pair indicates that 33% of all fatal accidents of 17-year-olds are due to speeding.
x | 17 | 27 | 37 | 47 | 57 | 67 | 77 |
y | 33 | 28 | 22 | 12 | 10 | 7 | 5 |
Complete parts (a) through (e), given
r^{2} = | |
explained | % |
unexplained | % |
(e) The value of coefficient of determination:
The given data is represented in the following table:
The value of coefficient of determination can be obtained using EXCEL. Enter the values of x and y in two columns, say in columns A and B in an EXCEL sheet, with the first cell containing the data labels, x and y. Then, follow the procedure given below:
The output is as follows:
From the EXCEL output, the value of coefficient of determination is R-square is 0.945. That is, 94.5% of the variation in y can be...
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