Hello, dear friend, you can consult us at any time if you have any questions, add WeChat: daixieit

EPPE 6034

ECONOMETRIC METHODS

SEMESTER 1 SESSION 2022/2023

ASSIGNMENT 2

1.   Use the data in Eviews workfile  lond_small.wf1 (500 observations) and estimate budget share equations of the form

 

wi  = F1  + F2 ln T0TEXPi  + F3AGEi  + F4 NKi  + ui

where

 

wfood =

budget share for food expenditure

wfuel   =

budget share for fuel expenditure

walc    =

budget share for alcohol expenditure

wtrans =

budget share for transport expenditure

wother =

budget share for other good expenditure

totexp  =

total household expenditure

age      =

age of household head

nk        =

number of children

Estimate the regression model for all budget shares in the data set (you will need to estimate five regression model). Create a table that combines all the estimation results. Report and discuss your results. In your discussion, comments on how total expenditure, age and number of children influence the various budget proportions. Also  comments  on the significance of your coefficient estimates.

A luxury good has an income elasticity of its budget share1 greater than zero, a necessary good has an income elasticity of the budget share less than zero, and an inferior good has an income elasticity of the budget share less than - 1.

From the estimation, commodities (goods) are regarded as luxuries if  F2  > 0. For each commodity group, test H0 : F2  = 0 against H1 : F2  > 0 and comment on the outcomes.

2.   Consider the following model for 36 rice farmers:

ln(PR0D)i  = F1  + F2 ln(AREA)i  + F3 ln(LAB0R)i+ F4 ln(FERT)i  + ui

where

PROD production of rice (tonnes)

AREarea of land planted (hectares)

LABOR labor (days hired)

FERT fertilizer (kilograms)

EVIEWS Output from estimating this equation is partially given below:

Dependent Variable: LNPROD

Method: Least Squares

Sample 0 36

Variable

Coefficient

Std. Error      t-Statistic

C

-1.546786

0.255654     -6.050321

LNAREA

0.361736

0.063968       5.654966

LNLABOR

0.432848

0.066883       6.471762

LNFERT

0.209502

0.038265       5.474979

R-squared

0.847871

Mean dependent var          1.541307

Adjusted R-squared

0.846559

S.D. dependent var              0.871600

S.E. of regression

0.341419

Akaike info criterion           0.699888

Sum squared resid

40.56536

Schwarz criterion                 0.743792

Log likelihood

-119.1802

Hannan-Quinn criter.          0.717360

a)         Interpret the coefficient of ln (AREA) and establish a 90 percent confidence interval for F2 .

b)         Interpret the value of R2

c)         Test the overall significance.

d)         Using a 5% level of significance, test the hypothesis that the elasticity of production with respect to labor is equal to 0.3 against the alternative that it is greater than 0.3.

e)         Given cov(F̂2, F̂3 ) = −0.003117 and using a 1% level of significance, test   the hypothesis that the elasticity of production with respect to land is equal to the elasticity of production with respect to labor.

3.   Consider the following results of production function for 1971-2009. Figures in parentheses are standard errors:

lYt  = − 3.938 + 1.451 ln Kt  + 0.384 lnLt

(0.237)    (0.083)          (0.048)

R2  = 0.9946                      RSS = 0.0434

Where

Y = gross domestic product (constant RM)

K = capital stock (constant RM)

L = number ofpersons working

Suppose the sample is divided into two periods 1971- 1990 and 1991-2009. The results are given below:

For 1971- 1990                             lYt  = −4.058 + 1.617 ln Kt  + 0.220 lnLt

(0.357)    (0.209)            (0.230)

R2  = 0.9759                    RSS = 0.03555

For 1991-2009

lYt  = − 2.498 + 1.009 ln Kt  + 0.579 lnLt

(0.531)    (0. 144)            (0.055)

R2  = 0.9958                    RSS = 0.00336

Using Chow test, decide whether there is a structural change in the two periods.