Kata Bognar
[email protected]
Economics 41
Statistics for Economists
UCLA
Fall 2010
Homework Assignment 1.
Due date: Oct 7, 2010.
Your Name:
Your TA’s Name:
NOTE:
Please show your calculations for Questions 56, 9, 1114. The exercises are
from the textbook (Tannis and Hogg: A Brief Course in Mathematical Statistics).
Basics.
1. In statistics, conducting a census means:
(a) making decisions based on sample results
(b) checking if a variable is discrete or continuous
(c) collecting information from all members of the population
(d) collecting a sample without replacement
2. A variable is a:
(a) result that varies from sample to sample
(b) characteristic under study that assumes diﬀerent values for diﬀerent elements
(c) sample drawn from a population in such a way that all its elements are dif
ferent
(d) characteristic under study that assumes the diﬀerent values for identical ele
ments
Frequency distributions and descriptive measures.
3. In a frequency distribution, the classes should always:
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 Spring '07
 Guggenberger
 Economics, Statistics, Standard Deviation, Frequency distribution, Kata Bognar kbognar, identical elements Frequency

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