Math Problem Statement
Let the model A be nested in the model B. Consequently the model B has more parameters than the model A. Let LA and LB be the estimated likelihood of the models A and B, respectively. What can you say about the LA and LB? Choose all that apply.
a) LA is always larger or equal to LB .
b) LB is always larger or equal to LA .
c) LA can be larger than LB and can be small than LB , depending on data.
d) (-2log (LA/LB)) follows a chi-square distribution with 1 degree of freedom.
e) LA/LB follows a F-distribution.
a
b
c
d
e
Solution
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Math Problem Analysis
Mathematical Concepts
Likelihood Ratio Test
Nested Models
Chi-Square Distribution
Formulas
-2log(LA/LB)
LA ≤ LB (likelihood of nested models)
Chi-square distribution with degrees of freedom (1)
Theorems
Likelihood Ratio Test
Chi-Square Distribution Theorem
Suitable Grade Level
Advanced undergraduate/graduate (statistics)
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