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Homework answers / question archive / Which of the following models can be estimated using ordinary least squares (OLS), where X, y, Z are variables and α, β, γ are parameters to be estimated? (following a suitable rearrangement if necessary and support with detail explanation) a

Which of the following models can be estimated using ordinary least squares (OLS), where *X*, *y*, *Z *are variables and *α*, *β*, *γ *are parameters to be estimated? (following a suitable rearrangement if necessary and support with detail explanation)

a. y_{t} = α + βx_{t} + u_{t}

b. y_{t} = e^{α} x_{t}^{β}e^{ut}

c. y_{t} = α + βγ x_{t} + u_{t}

d. ln(y_{t}) = α + β ln(x_{t}) + u_{t}

e. y_{t} = α + βx_{t}z_{t} + u_{t}