ec41f10_hw1

# ec41f10_hw1 - Kata Bognar [email protected] Economics 41...

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Kata Bognar 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 5-6, 9, 11-14. 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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ec41f10_hw1 - Kata Bognar [email protected] Economics 41...

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