1. The table below shows the data from the computer sales since 1960 to 1969. (a) Obtain a scatter diagram of the data. YEAR COST(X) SALES(Y) (h) Construct a line that approximates the data. 1960 15 38 (c) Find the equation of the line constructed in part (h). fett Estimate the-weight of a student-whose height-is known to be 63 in. te Estimate the height of a student whase-weightis known-to-be 1681h. Test the significance of regression coefficient b at 1% level of significance 1963 1961 30 53 1962 16 бо 39 72 1964 20 40 1965 36 47 1966 45 82 1967 10 21 1968 13 25 1969 16 40
1. The table below shows the data from the computer sales since 1960 to 1969. (a) Obtain a scatter diagram of the data. YEAR COST(X) SALES(Y) (h) Construct a line that approximates the data. 1960 15 38 (c) Find the equation of the line constructed in part (h). fett Estimate the-weight of a student-whose height-is known to be 63 in. te Estimate the height of a student whase-weightis known-to-be 1681h. Test the significance of regression coefficient b at 1% level of significance 1963 1961 30 53 1962 16 бо 39 72 1964 20 40 1965 36 47 1966 45 82 1967 10 21 1968 13 25 1969 16 40
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:1. The table below shows the data from the computer sales since 1960 to 1969.
(a) Obtain a scatter diagram of the data.
COST(X) SALES(Y)
YEAR
(h) Construct a line that approximates the data.
(c) Find the equation of the line constructed in part (h).
fA Estimate the-weight of u student-whose heightis known to be 63 in.
te Estimate the height of a student whase weight-is known-to be 168 15.
Test the significance of regression coefficient b at 1% level of significance
1960
15
38
1961
30
53
1962
16
бо
1963
39
72
1964
20
40
1965
36
47
1966
45
82
1967
10
21
1968
13
25
1969
16
40
2 Fit an equation of the forms Z = an + ajX + azY
To the given data
( yrs
No. Experience Test Score Salary
No Experience Test Score Salary
11
1
4
78
24
88
38
2
7
100
43
12
73
26.6
3
1
86
23.7
13
10
75
36.2
4
82
34.3
14
81
31.6
8
86
35.8
15
74
29
10
84
38
16
8
87
34
7
75
22.2
17
4
79
30.1
8
1
80
23.1
18
94
33.9
9.
6.
83
30
19
70
28.2
10
91
33
20
89
30
O 3 3
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