Economics 120A
Name:
_________________________
Professor Yongil Jeon
Summer 2008-2
Student ID#: ___________keys__________
Answer key to Homework #1 – Summer 2008-Session 2, Econ 120A
(Exam #1 and a part of Exam #2, Winter 2008, Econ 120A)
Answer all questions on separate paper. This problem set should be handed in to your TA
at the
beginning of your discussion session on Friday,
August 15
, 2008
.
Problem sets may not be
handed in once solutions have been distributed.
Please write down your name and PID clearly.
Good luck!
1. Multiple Choices (2 points each – 34 points total)
(1).
Qualitative data
a.
indicate either how much or how many
b. can not be numeric
c.
are labels used to identify attributes of elements
d. must be nonnumeric
Answer:
c
(2).
The collection of all elements of interest in a particular study is
a. the population
b. the sampling
c. statistical inference
d. descriptive statistics
Answer:
a
(3).
Since a sample is a subset of the population, the sample mean
(4).
The sum of the relative frequencies for all classes will always equal
(5).
Since the population size is always larger than the sample size, then the sample
statistic

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