Question
In: Statistics and Probability
Plot MATINGS by AGE, then add a least squares line. Include your plot. Is there evidence...
Plot MATINGS by AGE, then add a least squares line. Include your plot.
Is there evidence that modeling matings using a linear regression with age might not be appropriate? Explain. (Hint: Check for a linear trend and for constant variance about the linear fit.)
| AGE | MATINGS |
| 27 | 0 |
| 28 | 1 |
| 28 | 1 |
| 28 | 1 |
| 28 | 3 |
| 29 | 0 |
| 29 | 0 |
| 29 | 0 |
| 29 | 2 |
| 29 | 2 |
| 29 | 2 |
| 30 | 1 |
| 32 | 2 |
| 33 | 4 |
| 33 | 3 |
| 33 | 3 |
| 33 | 3 |
| 33 | 2 |
| 34 | 1 |
| 34 | 1 |
| 34 | 2 |
| 34 | 3 |
| 36 | 5 |
| 36 | 6 |
| 37 | 1 |
| 37 | 1 |
| 37 | 6 |
| 38 | 2 |
| 39 | 1 |
| 41 | 3 |
| 42 | 4 |
| 43 | 0 |
| 43 | 2 |
| 43 | 3 |
| 43 | 4 |
| 43 | 9 |
| 44 | 3 |
| 45 | 5 |
| 47 | 7 |
| 48 | 2 |
| 52 | 9 |
Solutions
orchestra answered 2 years agoRelated Solutions
a. Create a scatterplot b. Find the least -squares line c. Plot the line on the diagram
Using the following data.
X Y
3
6
6
10
9
15
12 24
15 21
18 20
a. Create a scatterplot
b. Find the least -squares line
c. Plot the line on the diagram
d. Predict:
Y if X is 10
Y if X is 17
An article gave a scatter plot along with the least squares line of x = rainfall...
An article gave a scatter plot along with the least squares line
of x = rainfall volume (m3) and y =
runoff volume (m3) for a particular location. The
accompanying values were read from the plot.
x
7
12
14
17
23
30
40
51
55
67
72
80
96
112
127
y
4
10
13
15
15
25
27
46
38
46
53
68
82
99
100
(a) Does a scatter plot of the data support the use of...
An article gave a scatter plot along with the least squares line of x = rainfall...
An article gave a scatter plot along with the least squares line
of x = rainfall volume (m3) and y = runoff volume (m3) for a
particular location. The accompanying values were read from the
plot.
x
8
12
14
18
23
30
40
50
55
67
72
85
96
112
127
y
4
10
13
15
15
25
27
45
38
46
53
75
82
99
104
(b) Calculate point estimates of the slope and intercept of the
population...
An article gave a scatter plot along with the least squares line of x = rainfall...
An article gave a scatter plot along with the least squares line
of x = rainfall volume (m3) and y =
runoff volume (m3) for a particular location. The
accompanying values were read from the plot.
x
4
12
14
18
23
30
40
47
55
67
72
80
96
112
127
y
4
10
13
14
15
25
27
44
38
46
53
69
82
99
100
(b) Calculate point estimates of the slope and intercept of the
population...
An article gave a scatter plot along with the least squares line of x = rainfall...
An article gave a scatter plot along with the least squares line
of x = rainfall volume (m3) and y =
runoff volume (m3) for a particular location. The
accompanying values were read from the plot.
x
8
12
14
18
23
30
40
47
55
67
72
82
96
112
127
y
4
10
13
14
15
25
27
48
38
46
53
75
82
99
101
(a) Does a scatter plot of the data support the use of...
An article gave a scatter plot along with the least squares line of x = rainfall...
An article gave a scatter plot along with the least squares line
of x = rainfall volume (m3) and y = runoff volume (m3) for a
particular location. The accompanying values were read from the
plot.
x 8 12 14 16 23 30 40 52 55 67 72 81 96 112 127
y 4 10 13 15 15 25 27 47 38 46 53 69 82 99 103
(a) Does a scatter plot of the data support the use of...
An article gave a scatter plot along with the least squares line of x = rainfall...
An article gave a scatter plot along with the least squares line
of x = rainfall volume (m3) and y =
runoff volume (m3) for a particular location. The
accompanying values were read from the plot.
x
5
12
14
18
23
30
40
46
55
67
72
80
96
112
127
y
4
10
13
15
15
25
27
46
38
46
53
72
82
99
101
(a) Does a scatter plot of the data support the use of...
An article gave a scatter plot along with the least squares line of x = rainfall...
An article gave a scatter plot along with the least squares line
of x = rainfall volume (m3) and y =
runoff volume (m3) for a particular location. The
accompanying values were read from the plot.
x
5
12
14
18
23
30
40
46
55
67
72
80
96
112
127
y
4
10
13
15
15
25
27
46
38
46
53
72
82
99
101
(a) Does a scatter plot of the data support the use of...
The purpose of subjecting your BSA protein standard plot data to the least squares statistical method...
The purpose of subjecting your BSA protein standard plot data to
the least squares statistical method was to
a. determine intuitively the best fit straight line.
b. statistically determine the best straight line through a
series of experimental points.
c. determine the overall shape of the BSA standard curve.
d. determine the protein concentration in the unknown
samples.
Q1. Write down the equation of the regression straight line (the least-squares line)
Q1. Write down the equation of the regression straight line (the least-squares line)
Q2. For an increase of 1 mg of fertiliser applied, what is the average change in the wet weight of maize plants?
Q3. How are the two variables associated with each other? (Answer in 1 or 2 sentences)Q4. Determine the average weight of plants grown with 100mg of fertiliser applied. (round up your answer to 2 decimal places)Q5. Determine the average weight of plants grown with...
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