iPad 14% 13:38 < Ваck Econ122A_PS3.pdf 4. In which of the following cases OLS estimation of Healthcare=a +bAge+u will be biased? a) Only include in your estimation sample individuals whose health care spending is more than 500 per year b) Use a random sample. c) Healthcare is recorded with some random typing errors. 1 d) The error variance is larger at an older age.

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iPad
14%
13:38
< Ваck
Econ122A_PS3.pdf
4. In which of the following cases OLS estimation of Healthcare=a +bAge+u will be
biased?
a) Only include in your estimation sample individuals whose health care spending is
more than 500 per year
b) Use a random sample.
c) Healthcare is recorded with some random typing errors.
1
d) The error variance is larger at an older age.
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iPad 14% 13:38 < Ваck Econ122A_PS3.pdf 4. In which of the following cases OLS estimation of Healthcare=a +bAge+u will be biased? a) Only include in your estimation sample individuals whose health care spending is more than 500 per year b) Use a random sample. c) Healthcare is recorded with some random typing errors. 1 d) The error variance is larger at an older age.