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Exam 14: Quantitative Data Analysis

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Question 1

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The most frequently occurring attribute,in either grouped or ungrouped data,is the .

A) mean
B) median
C) mode
D) range
E) marginal

F) A) and D)
G) A) and C)

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Question 2

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Which of the following is(are) aimed primarily at explanation?

A) Univariate analysis
B) Multivariate analysis
C) Bivariate analysis
D) Univariate,multivariate,and bivariate analyses all are primarily aimed at explanation
E) Only multivariate and bivariate analyses are aimed at explanation

F) B) and E)
G) A) and C)

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Question 3

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A bivariate table is read by comparing the independent variable subgroups with one another in terms of a given attribute of the dependent variable.

Quantitative data coding is always a simple and straightforward process.

When analyzing quantitative data,you can increase the detail of a variable collected at a more general level via coding.

A measure of dispersion describes:

Whereas univariate analysis and subgroup comparisons focus on the descriptions of the people under study,the focus of most of the bivariate analysis is on the relationships among the variables themselves.

A codebook contains the following information: COLUMNS DESCRIPTION 1-4 Case Number (a random identification number between 0001 and 9999) Sex 4 1=Male 2=Female Metropolitan Area of Residence 1=New York 2=Boston 3=Baltimore/Washington DC 5 4=Atlanta 5=Orlando 6=Tampa 7=Miami 8=Unknown 9=Missing Following this codebook,an individual assigned the number 283921

A univariate analysis examines the distribution of cases on one or more variables.

In multivariate analysis a second dependent variable is added.

A codebook is a guide for locating variables and interpreting codes in one's data file.

Certain guidelines should be kept in mind when coding.Among these is(are) the following:

A nominal variable is a discrete variable.

Explain the measures of univariate variable description that we have.What do these measures tell us? Why are they useful?

A researcher believes that a person's occupation affects his or her political party preference.Given the following data on occupation and political party preference,construct a contingency table.Percentage the table and interpret your results. Semiskilled Republican Unskilled Republican Semiskilled Democrat Skilled Other Semiskilled Other Unskilled Other Semiskilled Democrat Semiskilled Democrat Unskilled Other Skilled Republican Unskilled Other Skilled Democrat Skilled Other Skilled Republican Semiskilled Democrat Skilled Other Skilled Other Unskilled Republican Semiskilled Democrat Skilled Other

The College of Arts and Science at Delta University has nine departments.The number of faculty in each department is shown below.What is the mean number of faculty in the College of Arts and Science? 8,12,9,15,17,11,13,14,7

Given the following age distribution,the range is .12,15,8,17,34,43,2,16,43,3

What is a codebook? Construct a codebook for the following questionnaire items. a.Sex (1)Male (2)Female b.Age at last birthday? c.How many brothers and sisters do you have? (Count only those who are now alive.Include stepbrothers and stepsisters and children adopted by your parents. ) d.What is your current marital status? (1)Married (2)Widowed (3)Divorced (4)Separated (5)Never married

A friend of yours assigned a code of 1 to "male" and a code of 2 to "female" on the variable sex.Your friend asked the computer to compute the average score on sex.The computer printout contained the following information: mean=1.38,standard deviation=.43,median=1.4,and mode=1.0.You advise your friend that the best measure(s) of central tendency is(are) .

Looking at your data and frequency distribution,you find that a variable labeled LEVEL has only whole number values between 1 and 5.You can conclude that the variable is a(n) :