Sociology 301
Rates, Variables, Frequency Distributions
1. Suppose the following represent the annual incomes of a sample of community residents expressed in
dollars:
9,760
10,850
10,340
10,890
9,860
24,210
11,340
11,360
11,350
18,740
11,350
26,890
12,210
Sociology 301
Dr. Judith Stull
Spring 2015
First Exam - Practice
1. Clearly define: Mean, Mode, and Median and indicate at least one strength and weakness of
each one.
Mean: A measure of central tendency that is obtained by adding up all score and dividin
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Problem Set 2
January 22, 2015
1. Please do questions 2, 3, 6, and 9 listed at the end of Chapter 1 in your text.
2. Identify which of the following represents a continuous variable and which a discrete variable:
a. Time of day
b. Age of a
Najla Muhammad Soc 301
Self-Analysis
Growing up with two parents in the military, and playing soccer for most of my
life I pride myself in working very hard to achieve the best results. Each semester I go
into classes ready to work, and gain some sort of
Sociology 301
Measures of Dispersion
1. Compute the range and standard deviation for the following:
a. 1,2,1,3,2,4,5,8
Range = 8-1= 7
Standard deviation: 2.36
Mean : 3.25
Deviation from the mean:
1-3.25 = -2.25 -2.25^2
2-3.25 = -1.25
-1.25^2
1-3.25 = -2.2
Problem Set Sampling, Samples, and Sampling Distributions
1. Please answer questions 2, 4, and 6 in your text.
2A. These letters represent a random sample because the newspaper didnt ask
specific people to write in and give their opinion.
2B. The mayor co
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Sociology 301
Problem Set #4
Measures of Central Tendency
1. Four groups of students consisting of 15,20,10, and 25 individuals in each reported test
scores of 65,80,70 and 90 respectively. What is the overall mean score? Incidentally it is