What is the equation for the least.square regression line where the independent or predictor variable is petal length and the dependent or response variable is petal width for iris versicolor? =Ex 1.234 I+ Ex: 1.234 What is the predicted petal width for iris versicolor for a flower with a petal length of 4.1? Ex: 5.12 cn
What is the equation for the least.square regression line where the independent or predictor variable is petal length and the dependent or response variable is petal width for iris versicolor? =Ex 1.234 I+ Ex: 1.234 What is the predicted petal width for iris versicolor for a flower with a petal length of 4.1? Ex: 5.12 cn
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CHALLENGE ACTIVITY
2.3.2: Excel: Linear regression.
Click this link to download the spreadsheet for use in this activity.
Jump to level1
The famous iris dataset (the first sheet of the spreadsheet linked above) was first published in 1936 by Ronald
Fisher. The dataset contains 50 samples from 3 iris species: setosa, virginia, and versicolor. Four features are
measured, all in cm: sepal length, sepal width, petal length, and petal width.
What is the equation for the least,square regression line where the independent or predictor variable is petal length
and the dependent or response variable is petal width for iris versicolor?
ý = Ex 1.234
I+ Ex: 1.234
What is the predicted petal width for iris versicolor for a flower with a petal length of 4.1?
Ex: 5.12
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Transcribed Image Text:5:31 O OA
HG 84%
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fx
A
B
D
E
F
G
H
1
2
Sepal length Sepal width Species
"Sepal width' by 'Sepal length
3
3.2 Iris-versicolor
4
6.4
3.2 Iris-versicolor
5
6.9
3.1 Iris-versicolor
3.5
6
5.5
2.3 Iris-versicolor
3
7
6.5
2.8 Iris-versicolor
2.5
8
5.7
2.8 Iris-versicolor
6.3
3.3 Iris-versicolor
2
10
4.9
2.4 Iris-versicolor
11
6.6
2.9 Iris-versicolor
1
12
5.2
2.7 Iris-versicolor
13
2 Iris-versicolor
3 Iris-versicolor
2.2 Iris-versicolor
0.5
14
5.9
15
6.
1
2
4
5
16
6.1
2.9 Iris-versicolor
Sepal length
17
5.6
2.9 Iris-versicolor
18
6.7
3.1 Iris-versicolor
19
5.6
3 Iris-versicolor
20
5.8
2.7 Iris-versicolor
21
6.2
2.2 Iris-versicolor
22
5.6
2.5 Iris-versicolor
23
5.9
3.2 Iris-versicolor
24
6.1
2.8 Iris-versicolor
25
6.3
2.5 Iris-versicolor
26
6.1
2.8 Iris-versicolor
27
6.4
2.9 Iris-versicolor
28
6.6
3 Iris-versicolor
29
6.8
2.8 Iris-versicolor
30
6.7
3 Iris-versicolor
31
2.9 Iris-versicolor
32
5.7
2.6 Iris-versicolor
33
5.5
2.4 Iris-versicolor
34
5.5
2.4 Iris-versicolor
35
5.8
2.7 Iris-versicolor
36
6
2.7 Iris-versicolor
3 Iris-versicolor
3.4 Iris-versicolor
37
5.4
38
6
39
6.7
3.1 Iris-versicolor
40
6.3
2.3 Iris-versicolor
41
5.6
3 Iris-versicolor
42
5.5
2.5 Iris-versicolor
43
5.5
2.6 Iris-versicolor
44
6.1
3 Iris-versicolor
45
5.8
2.6 Iris-versicolor
46
2.3 Iris-versicolor
47
5.6
2.7 Iris-versicolor
3 Iris-versicolor
2.9 Iris-versicolor
48
5.7
49
5.7
50
6.2
2.9 Iris-versicolor
51
5.1
2.5 Iris-versicolor
52
5.7
2.8 Iris-versicolor
53
54
55
56
57
58
59
60
61
62
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66
dro
Sepal width
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