Fit a parabola and a least squares straight line to the following data set and calculate what is required X Y 23 77 26 57 29 46 32 30 35 18 38 14 41 12 44 17 47 15 50 18 53 27 26 48 379 X² X¹ X¹ Y² XY X-Y Parable Yeal Line Y cal
Fit a parabola and a least squares straight line to the following data set and calculate what is required X Y 23 77 26 57 29 46 32 30 35 18 38 14 41 12 44 17 47 15 50 18 53 27 26 48 379 X² X¹ X¹ Y² XY X-Y Parable Yeal Line Y cal
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.5: Graphs Of Functions
Problem 57E
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Question
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
Transcribed Image Text:GRAPH FOR OBSERVED DATA
75
65
55
45
35
25
15
GRAPH FOR OBSERVED DATA
65
55
45
25
15
5
GRAPH FOR OBSERVED DATA LINE
44
40
36
32
28
24
PARABLE
20

Transcribed Image Text:Fit a parabola and a least squares straight line to the following data set and calculate what is required
X
Y
23
77
26 57
29
46
32
30
35
18
38
14
41 12
44
47
50
53
26
17
15
18
27
48
379
TOTAL
(Y-ỹ)
X²
X¹
PARABLE
VAR. EXPLICAD
(Yest - y)²
X¹
VAR. NO EXPLI.
(Y-Y)²
Y²
XY
LINE
VAR. EXPLICAD
(Yest- y)²
X¹Y
VAR. NO EXPLI.
(Y-Yest)²
Parable
Y cal
Line
Y cal
OBTAINING THE PARABLE
OBTAINING THE EQUATION OF THE STRAIGHT LINE
ESTIMATE THE VALUE OF Y WHEN X=45.7 (Parabola) y (Line)
ESTIMATE THE VALUE OF X WHEN Y=20 (Parabola) and (Line)
FIND THE LINEAR AND NONLINEAR COEFFICIENTS OF CORRELATION
REGARDING THE RESULT OF THE LINEAR COEFFICIENT, EXPLAIN WHY IT IS POSITIVE OR NEGATIVE
EXPLAIN THE DIFFERENCE BETWEEN THE COEFFICIENTS OBTAINED
CALCULATE THE STANDARD ERROR OF THE ESTIMATE OF Y OVER X
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