College Algebra
1st Edition
ISBN: 9781938168383
Author: Jay Abramson
Publisher: OpenStax
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Transcribed Image Text:An article presents the results of an experiment in which the surface roughness (in μm) was measured for 15 D2 steel
specimens and compared with the roughness predicted by a neural network model. The results are presented in the
following table.
TRUE Value (x)
Predicted Value (y)
of 6
0.45
0.400
0.82
0.7
0.54
0.52
0.41
0.39
0.77
0.74
2:30:15
0.79
0.78
0.25
0.27
pped
0.62
0.6
0.91
0.87
0.52
Book
0.51
1.02
0.91
Hint
0.6
0.71
Ask
0.58
0.5
erences
0.87
0.91
1.06
1.04
۵
To check the accuracy of the prediction method, the linear model y=Bo+B1x+ & is fit. If the prediction method is
accurate, the value of Bo will be 0 and the value of ẞ1 will be 1.
Note: This problem has a reduced data set for ease of performing the calculations required. This differs from the data
set given for this problem in the text.
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