Econometrics - ECS3706
Assignment 02
Semester 01- 2024
, QUESTION A1 (15 marks)
(a) To find the predicted birth weight (BW) when maternal smoking during pregnancy
(MSDP) is 0, plug 0 into the equation for MSDP:
̂ = 3.5 − 0.625 × 0
𝐵𝑊
̂ = 3.5
𝐵𝑊
So, the predicted birth weight when MSDP is 0 is 3.5 kilograms.
(b) To find the predicted birth weight when MSDP is 15, substitute 15 into the equation
for MSDP:
̂ = 3.5 − 0.625 × 15
𝐵𝑊
̂ = 3.5 − 9.375
𝐵𝑊
̂ = −5.875
𝐵𝑊
(c) Parts (a) and (b) vary in showing that the expected BW drops dramatically with
increasing MSDP. This finding …….
Continued next Page.
Assignment 02
Semester 01- 2024
, QUESTION A1 (15 marks)
(a) To find the predicted birth weight (BW) when maternal smoking during pregnancy
(MSDP) is 0, plug 0 into the equation for MSDP:
̂ = 3.5 − 0.625 × 0
𝐵𝑊
̂ = 3.5
𝐵𝑊
So, the predicted birth weight when MSDP is 0 is 3.5 kilograms.
(b) To find the predicted birth weight when MSDP is 15, substitute 15 into the equation
for MSDP:
̂ = 3.5 − 0.625 × 15
𝐵𝑊
̂ = 3.5 − 9.375
𝐵𝑊
̂ = −5.875
𝐵𝑊
(c) Parts (a) and (b) vary in showing that the expected BW drops dramatically with
increasing MSDP. This finding …….
Continued next Page.
