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Statistic quiz (regressin & random variables & portfolio analysis) Essay Example
- Category:Mathematics
- Document type:Math Problem
- Level:Undergraduate
- Page:1
- Words:173
Mathematics 5
Subject: Mathematics
Question 1
None of the regression coefficients is different from zero
Question 2
Question 3
Dummy variable
Question 4
Question 5
Both the dummy variable and the non-dummy variable are significant
Question 6
Question 7
Two or more of the independent variables
Question 8
The standard deviations of regression coefficients are underestimated
Question 9
Correlation matrix
-0.24121 |
|||||
0.620616 |
-0.35896 |
||||
0.278395 |
-0.16089 |
0.243151 |
|||
-0.72429 |
0.325018 |
-0.44185 |
-0.27783 |
Pairwise correlation:
Question 10
Residential Electricity (kWh) |
Residential Natural Gas (1000 ft3) |
Residential Fuel Oil (gal) |
Leaded Regular Gasoline |
|
Residential Electricity (kWh) |
||||
Residential Natural Gas (1000 ft3) |
0.964109644 |
|||
Residential Fuel Oil (gal) |
0.497928021 |
0.570267926 |
||
Leaded Regular Gasoline |
0.6876106 |
0.700889858 |
0.9338525 |
Correlation between natural gas and fuel oil equals 0.570
Correlation between natural gas and gasoline equals 0.701
Correlation between gasoline and fuel oil equals 0.934
Question 11
|
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0 |
0 |
|
Question 12
|
|
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0 |
0 |
0 |
|
Question 13
Question 14
Question 15
A^2p(A,B) |
B^2p(A,B) |
ABp(A,B) |
|||||
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
0 |
0 |
||||
0 |
0 |
0 |
0 |
||||
Question 16
Question 17