# 程序代写案例-ECA5103-Assignment 1

ECA5103 Assignment 1 Submit by 11:59pm Sunday, 25 Sep. 2022
1. Using insheet to load the Singapore HDB r
esale data resale-flat-prices-
based-on-registration-date-from-jan-2017-onwards.csv and generate three
new variables, price per m2, log price per m2, and log area
2. Proper label the three newly created variables and existing variables re-
sale price and floor area sqm.
3. Calculate basic summary statistics for the three newly created variables
and existing variables resale price and floor area sqm using the following
table template. The variable columns should contains variable label rather
than variable name. Please keep 1 decimal point for all statistics.
VARIABLES N mean sd min max
4. Plot the histogram for price per m2, log price per m2, and resale price
5. Run the following five regressions, report the regression result following
the template, and interpret the coefficient on the independent variables.
reg resale_price floor_area_sqm
reg price_m2 floor_area_sqm
reg ln_price_m2 floor_area_sqm
reg price_m2 ln_floor_area
reg ln_price_m2 ln_floor_area
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ECA5103 Assignment 1 Submit by 11:59pm Sunday, 25 Sep. 2022
(1) (2) (3) (4) (5)
Price Log price Price Log price
VARIABLES Sales price per m2 per m2 per m2 per m2
Floor area in m2 0.000***
(0.000)
Log floor area
Observations
R-squared
Standard errors in parentheses
*** p<0.01, ** p<0.05, * p<0.1
6. Use the following two commands to create a floor variable that repre-
sents the lower bound of a unit’s floor level. Should we control floor in
the regression? Should we include a quadratic function of floor in the
regression?
split storey_range, p(" ")
destring storey_range1, gen(floor)
reg ln_price_m2 ln_floor_area floor
reg ln_price_m2 ln_floor_area floor floor_squared
Reports the regression results in a Table following the similar format as
in question 5. What is the impact of one additional floor on the price
evaluated at floor=3 from the above two regression?
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ECA5103 Assignment 1 Submit by 11:59pm Sunday, 25 Sep. 2022
7. If the floor area is measured by squared feet, will the coefficients from the
above two regressions change? Explain.
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