Which of the following statements is correct concerning the conditions required for OLS to be a usable estimation technique?6/20Which of the following statements is correct concerning the conditions required for OLS to be a usable estimation technique?The model must be linear in the parametersThe model must be linear in the variablesThe model must be linear in the variables and the parametersThe model must be linear in the residualsGiải thíchChọn đáp án: A