iClicker Q1
According to the Stata output the R2 and adjusted-R2 values respectively are:
a)
b)
c)
d)
0.3097; 0.3044
0.0690; 0.3097
2.2289; 0.0690
0.690; 0.3097
EC 306 Economics of Wages and Employment
Professor: Jason Dean
Relevant formulas for Q1
EC 306
Clicker 1
2-1
Clicker 2
2-2
Clicker 3
2-3
Clicker 4
Which of the following is the correct formula for
?
a)
b)
c)
d)
2-4
Clicker 5
Using the data below, calculate the OLS slope coefficient
using the formula from the previous question. Use Excel!
A)1.32
B)1
Clicker 1
A variable that takes on the values of 0 or 1 and is used
to incorporate the effect of qualitative variables in a
regression model is called
a. an interaction
b. a constant variable
c. a dummy variable
d. None of these alternatives is correct.
2
Clicker 1
2-1
Clicker 2
2-2
Download the Employment Data.dta file on MyLS in the
Adhoc Datasets folder.
Open the dataset in Stata. If you want to use Excel you
can download the Excel file instead.
Run a regression of Wages on Education.
Excel Users: E
Clicker 1
Suppose X is a random variable with mean 1 and Z is a
random variable with mean 2,then the E(2 + X + Z) is
equal to:
a) 2 + x + y
b) E(X + Y)
c) 2 + 1 + 2
d) (1 + 2)2
2-1
Clicker 2
Suppose we have the following:
The E(Yi) and the Var(Yi) are:
Yi