Question
In: Statistics and Probability
1. x 1 2 3 4 5 6 y 708 711 721 716 756 743 Use...
1.
| x | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| y | 708 | 711 | 721 | 716 | 756 | 743 |
Use linear regression to find an linear function that best fits
this data. Round to 2 decimal places.
y =
2.
| x | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| y | 710 | 10077 | 44352 | 135011 | 321471 | 642734 |
Use linear regression to find the equation for the linear
function that best fits this data. Round to two decimal
places.
y^ =
3.
| x | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| y | 734 | 1013 | 1412 | 1833 | 2583 | 3674 |
Use linear regression to find the equation for the linear function
that best fits this data. Round numbers to two decimal
places.
y =
Solutions
orchestra answered 1 year agoRelated Solutions
x 1 2 3 4 5 6 y 608 619 674 672 676 721 Use exponential...
x
1
2
3
4
5
6
y
608
619
674
672
676
721
Use exponential regression to find an exponential function that
best fits this data.
f(x) =
Use linear regression to find an linear function that best fits
this data.
g(x) =
ID X Y 1 2 3 2 3 6 3 4 6 4 5 7 5...
ID
X
Y
1
2
3
2
3
6
3
4
6
4
5
7
5
8
7
6
5
7
7
6
7
8
8
8
9
7
8
10
12
11
Test the significance of the correlation coefficient.
Then use math test scores (X) to predict physics test scores
(Y). Do the following:
Create a scatterplot of X and Y.
Write the regression equation and interpret the regression
coefficients (i.e., intercept and slope).
Predict the physics score for each....
X 1 3 5 3 4 4 Y 2 5 4 3 4 6 A: Plot...
X
1
3
5
3
4
4
Y
2
5
4
3
4
6
A: Plot the date
B: find the line of best fit
C: determine ŷ AT x=3
D: Find r and r^2
E: explain r and r^2
2. Consider the following data: x= 1, 2, 3, 4, 5 y =3, 2, 4, 6,...
2. Consider the following data:
x= 1, 2, 3, 4, 5
y =3, 2, 4, 6, 5
By hand, not using Matlab, and showing your work:
(a) Compute the correlation coefficient.
(b) Find the least-squares line.
(c) Find the standard deviation around the least-squares
line.
1) Define the sets X ={ 1, 2, 3} and Y = {4, 5, 6}. Now,...
1) Define the sets X ={ 1, 2, 3} and Y = {4, 5, 6}. Now, define
the relation R from X to Y by xRy if and only if x − y is even.
Find all of the elements in R.
2) Define the relation R on ℤ by mRn if and only if 2|(m − n).
Show that R is an equivalence relation.
Consider the following data table: x 8 5 4 6 2 5 3 y 1 3...
Consider the following data table:
x
8
5
4
6
2
5
3
y
1
3
6
3
7
2
5
(15 points) Create a scatterplot of the data either by hand or
with a computer. Does there appear to be a linear
relationship between x and y? If so,
what is the strength and direction of the relationship?
(20 points) Give the Simple Linear Regression Model, using
x as the predictor variable and y as the response
variable. What is the meaning...
x 1 2 3 4 5 6 y 1057 1510 2151 3499 5146 7261 Use linear...
x
1
2
3
4
5
6
y
1057
1510
2151
3499
5146
7261
Use linear regression to find the equation for the linear
function that best fits this data. Round to two decimal
places.
Y=
Returns on stocks X and Y are listed below: Period 1 2 3 4 5 6...
Returns on stocks X and Y are listed below:
Period
1
2
3
4
5
6
7
Stock X
3%
-2%
9%
6%
-1%
-4%
11%
Stock Y
1%
-4%
7%
12%
3%
-2%
-1%
Consider a portfolio of 20% stock X and 80% stock Y.
What is the (population) variance of portfolio
returns?
Please round your answer to six decimal places.
Note that the correct answer will be evaluated based on the
full-precision result you would obtain using Excel.
Returns on stocks X and Y are listed below: Period 1 2 3 4 5 6...
Returns on stocks X and Y are listed below:
Period
1
2
3
4
5
6
7
Stock X
5%
6%
-2%
-4%
6%
10%
7%
Stock Y
1%
-3%
6%
3%
12%
7%
-5%
Consider a portfolio of 40% stock X and 60% stock Y.
What is the (population) variance of portfolio
returns?
Please round your answer to six decimal places.
Returns on stocks X and Y are listed below: Period 1 2 3 4 5 6...
Returns on stocks X and Y are listed below:
Period
1
2
3
4
5
6
7
Stock X
5%
6%
-2%
-4%
6%
10%
7%
Stock Y
1%
-3%
6%
3%
12%
7%
-5%
Consider a portfolio of 40% stock X and 60% stock Y.
What is the (population) variance of portfolio
returns?
Please round your answer to six decimal places.
Note that the correct answer will be evaluated based on the
full-precision result you would obtain using Excel.
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