The following multiple regression results are part of a study of the demand for chicken in the USA. Q Calculates the quantity of chicken purchased per annum. PC and PB are the price of chicken and beef respectively and YD is disposable income.  C is the intercept term in the equation

               
               
  (i)    Describe briefly whether you would expect every of the slope coefficients to be positive or negative, giving your reasons. 
Hence comment on the signs of the sample estimates.

  (ii)    What further information would be required in addition to the information given in the table to estimate the price or income elasticity of demand.Describe your answer.