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H ADM 201
Final Review
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2
Goals for Today
No notes
Many Questions
Understand everything
Prepare
HA 201 Final Review
3
Review Topics
1.
Correlation
2.
Simple linear regression
3.
Other Subjects
4.
Example
5.
Recommendations
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4
1Correlation
Strength of LINEAR relationship
Between two NUMERICAL variables
The two variables are in equal footing
ρ, the correlation coefficient is
a standardized covariance
a (bivariate) population parameter
r, the sample correlation coefficient is
computed using estimates
a statistic
1<r<1 and 1<ρ<1, why?
HA 201 Final Review
5
2Simple linear Regression
Two variables: one responds to the other
Response and predictor variables
The regression equation is
The distributional model is
i
i
i
x
b
b
y
ε
+
+
=
1
0
ˆ
i
i
i
x
b
b
+
+
=
1
0
X
Y
⋅
+
=
1
0
β
( 29
2
1
0
,
~
σ
X
N
ind
Y
⋅
+
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6
Calculating B
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This homework help was uploaded on 02/19/2008 for the course H ADM 201 taught by Professor Rlloyd during the Spring '06 term at Cornell University (Engineering School).
 Spring '06
 RLLOYD

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