our estimate for price elasticity is four and one to nought point eight minus one is one point eight, notice though that its  ratio has jumped  considerably or has doubled  and the dummy variable itself  is very significant  the T ratio ten  the coefficient on that dummy variable tells us the effect of the war on textile consumption, right so on average textile consumption rose by point two  er see what the units of measurement are  we don't actually have  units of er ah so we'll 