Compute Multiple Linear Regression

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PSY-7104_Week_10_Assignment_Data1.xlsx

Diamonds

AGE No of YRS Social Support Work stress
25 2 23 11
29 5 29 10
43 20 20 26
44 20 15 24
50 19 9 31
49 20 22 33
50 21 11 34
53 22 12 32
24 1 29 15
35 7 25 26
33 5 21 24
27 2 30 23
51 25 8 31
49 22 13 28
45 21 16 25
24 1 29 10
39 10 25 23
24 1 30 11
27 3 23 18
29 4 28 14
40 13 13 23
41 16 25 25
49 20 21 23
60 33 14 30
59 30 12 33
62 33 10 29
55 20 18 27
28 3 26 12
29 4 24 14
30 4 25 27
31 5 23 24
32 4 27 33
39 5 23 29
34 3 21 22
35 6 25 23
46 8 20 33
57 29 20 33
30 4 26 26
49 13 17 33
40 16 25 28
32 5 29 21
42 17 21 26
53 24 14 29
44 16 22 25
25 1 30 19
28 2 27 20
47 20 19 28
58 25 19 30
59 25 16 29
50 20 21 30
41 15 25 29
32 4 22 21
53 27 17 29
44 20 21 26
55 30 20 27
56 29 20 29
37 20 26 23
58 30 15 30
59 30 12 31
60 33 14 30
61 32 18 29
32 9 24 24
33 7 21 27
24 1 24 11
45 18 21 25
66 39 23 30
43 17 26 26
42 16 9 22
39 10 20 24
50 25 12 30
61 32 14 31
52 25 17 29
33 5 21 23
44 15 20 30
55 26 16 26
46 20 23 24
37 9 21 21
28 4 26 20
38 9 21 21
60 35 15 27
41 17 21 25
32 9 26 21
24 1 24 14
27 2 25 12
33 5 23 22
39 7 21 29
41 16 21 28
40 15 19 27
48 15 21 30
50 25 20 31
51 25 20 32
60 32 24 30
33 9 26 28
44 20 22 29
28 3 21 16
36 9 24 23
35 7 21 25
48 20 27 25
45 17 25 26
61 33 25 30

Legend

Data are for 308 round-cut diamonds, taken from a newspaper ad
Data were obtained from the Journal of Statistics Education data archive
IDNO - an identification number for each data point
WEIGHT - weight of the diamond, in carats
COLOR - degree of color purity in the diamond
"D" represents top color purity grade
Lesser grades are "E", "F", and so on, through the alphabet
CLARITY - diamond clarity (presence or absence of minute flaws)
"IF" means "internally flawless" - the top grade. No flaws visible under 10-power magnification
Other grades in descending order:
"VVS1" and "VVS2" for "very very slightly imperfect"
"VS1" and "VS2" for "very slightly imperfect"
RATER - the diamond was evaluated by one of three independent rating agencies
"GIA" - Gemmological Institute of America (based in New York)
"IGI" - International Gemmological Institute (Antwerp)
"HRD" - Hoge Raad Voor Diamant (Antwerp)
PRICE - in Singapore dollars