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 sepal length and the dependent or response variable is sepal width for iris versicolor? ý = Ex 1.234 I+ Ex: 1.234 What is the predicted sepal width for iris versicolor for a flower with a sepal length of 4.91? Ex: 5.12 cm

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CHALLENGE ACTIVITY
2.3.2: Excel: Linear regression.
Click this link to download the spreadsheet for use in this activity
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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 sepal
length and the dependent or response variable is sepal width for iris versicolor?
ý = Ex 1.234
I+ Ex: 1.234
What is the predicted sepal width for iris versicolor for a flower with a sepal length of 4.91?
Ex: 5.12
cm
Transcribed Image Text:Feedback? CHALLENGE ACTIVITY 2.3.2: Excel: Linear regression. Click this link to download the spreadsheet for use in this activity Jump to level 1 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 sepal length and the dependent or response variable is sepal width for iris versicolor? ý = Ex 1.234 I+ Ex: 1.234 What is the predicted sepal width for iris versicolor for a flower with a sepal length of 4.91? Ex: 5.12 cm
5:31 O OA
HG 84%
44 - Unsaved
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
63
64
65
66
dro
Sepal width
Transcribed Image Text:5:31 O OA HG 84% 44 - Unsaved 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 63 64 65 66 dro Sepal width
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