Question 1

Precoding refers to assigning numeric codes to response categories on a survey prior to letting respondents complete the survey.

Accepted Answer

A) True 
 B)False  True

Question 2

Explain the logic and components of regression analysis.What is the purpose of the correlation coefficient? A scatterplot?

Accepted Answer

Regression analysis--a statistical technique for characterizing the pattern of a relationship between two quantitative variables in terms of a linear equation and for summarizing the strength of this relationship in terms of its deviation from the linear pattern; the regression line summarizes the relationship between the independent and the dependent variables (positive,negative,and none; correlation coefficient--a summary statistic that varies from 0 to 1 or −1,with 0 indicating that the relationship is completely described by the line representing the regression of the dependent variable on the independent variable; a scatterplot shows the location of each case in the data.

Question 3

Name at least three circumstances in which it is appropriate to add a third variable into a cross-tabulation.Why would you do each? What features of the bivariate relationship could be demonstrated using a three-variable crosstab?

Accepted Answer

Three different uses for three-variable cross-tabulation: (1)identifying an intervening variable,(2)testing a relationship for spuriousness,and (3)specifying the conditions for a relationship; each type of three-variable crosstab helps strengthen our understanding of the "focal relationship" involving our dependent and independent variables; testing a relationship for possible spuriousness helps to meet the nonspuriousness criterion for causality; identifying an intervening variable can help chart the causal mechanism by which variation in the independent variable influences variation in the dependent variable; and specifying the conditions when a relationship occurs can help improve our understanding of the nature of that relationship.

Question 4

If the mean is greater than the median,which of the following must be true?

Accepted Answer

A) Variable is normally distributed. 
B) Variable is measured at the ordinal level. 
C) The variable's distribution must be positively skewed. 
D) The relationship between variables is inverse. 
A) Variable is normally distributed. 
B) Variable is measured at the ordinal level. 
C) The variable's distribution must be positively skewed. 
D) The relationship between variables is inverse.

Question 5

The total number of cases in a distribution is called ______.

Accepted Answer

A) the base number N 
B) the range 
C) the row marginal 
D) the mode 
A) the base number N 
B) the range 
C) the row marginal 
D) the mode

Question 6

Typical standards in frequency table construction allow people to ______.

Accepted Answer

A) compare across and percentage down columns 
B) percentage down and compare across columns 
C) compare row and column marginals 
D) project the distribution of the independent and dependent variables 
A) compare across and percentage down columns 
B) percentage down and compare across columns 
C) compare row and column marginals 
D) project the distribution of the independent and dependent variables

Question 7

To consider context in a bivariate crosstabs,add ______?

Accepted Answer

A) control variable 
B) dichotomous variable 
C) extraneous variable 
D) intervening variable 
A) control variable 
B) dichotomous variable 
C) extraneous variable 
D) intervening variable

Question 8

The median is not affected by skewness of a variable's distribution.

Accepted Answer

A) True 
 B)False

Question 9

$\gamma$ measures the strength of association in ______.

Accepted Answer

A) correlation 
B) regression 
C) crosstabs 
D) elaboration 
A) correlation 
B) regression 
C) crosstabs 
D) elaboration

Question 10

If a variable contains more than 20 potential categories,it should be grouped in a frequency distribution.

Accepted Answer

A) True 
 B)False

Question 11

Data cleaning is most important when downloading secondary data files.

Accepted Answer

A) True 
 B)False

Question 12

When a standard deviation is calculated from sample data,the denominator in the formula SHOULD be ______.

Accepted Answer

A) the sum of all values of Y 
B) the mean of Y 
C) N 
D) N − 1 
A) the sum of all values of Y 
B) the mean of Y 
C) N 
D) N − 1

Question 13

Unique combinations of row and column variables in a cross-tabulation can be found in the table ______.

Accepted Answer

A) title 
B) cells 
C) marginals 
D) stubs 
A) title 
B) cells 
C) marginals 
D) stubs

Question 14

The process of assigning a unique numerical code to each response to survey questions is called ______.

Accepted Answer

A) coding 
B) precoding 
C) randomization 
D) data cleaning 
A) coding 
B) precoding 
C) randomization 
D) data cleaning

Question 15

Which summary statistic should be used for nominal variables?

Accepted Answer

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

Question 16

In the group of numbers 1,1,6,7,8,37,37 is ______.

Accepted Answer

A) the mean 
B) the median 
C) an outlier 
D) the range 
A) the mean 
B) the median 
C) an outlier 
D) the range

Question 17

How do most survey organizations now prevent the entry of invalid codes?

Accepted Answer

A) preceding of surveys 
B) database programs that control data entry 
C) use of secondary data 
D) use of qualitative research 
A) preceding of surveys 
B) database programs that control data entry 
C) use of secondary data 
D) use of qualitative research

Question 18

When using primary data,what steps must be taken to ensure that the data quality is high,both during data entry and during data cleaning stages? What technologies facilitate both?

Accepted Answer

Data cleaning--the process of checking d

Question 19

Statistics used for estimating the degree of confidence that can be placed in generalizations from a sample to the population from which it was selected are known as ______.

Accepted Answer

A) descriptive statistics 
B) variability measures 
C) measures of central tendency 
D) inferential statistics 
A) descriptive statistics 
B) variability measures 
C) measures of central tendency 
D) inferential statistics

Question 20

Researchers usually evaluate skewness by eyeballing the distribution.

Accepted Answer

A) True 
 B)False

Precoding refers to assigning numeric codes to response categories on a survey prior to letting respondents complete the survey.

Explain the logic and components of regression analysis.What is the purpose of the correlation coefficient? A scatterplot?

Name at least three circumstances in which it is appropriate to add a third variable into a cross-tabulation.Why would you do each? What features of the bivariate relationship could be demonstrated using a three-variable crosstab?

If the mean is greater than the median,which of the following must be true?

The total number of cases in a distribution is called ______.

Typical standards in frequency table construction allow people to ______.

To consider context in a bivariate crosstabs,add ______?

The median is not affected by skewness of a variable's distribution.

$\gamma$ measures the strength of association in ______.

If a variable contains more than 20 potential categories,it should be grouped in a frequency distribution.

Data cleaning is most important when downloading secondary data files.

When a standard deviation is calculated from sample data,the denominator in the formula SHOULD be ______.

Unique combinations of row and column variables in a cross-tabulation can be found in the table ______.

The process of assigning a unique numerical code to each response to survey questions is called ______.

Which summary statistic should be used for nominal variables?

In the group of numbers 1,1,6,7,8,37,37 is ______.

How do most survey organizations now prevent the entry of invalid codes?

When using primary data,what steps must be taken to ensure that the data quality is high,both during data entry and during data cleaning stages? What technologies facilitate both?

Statistics used for estimating the degree of confidence that can be placed in generalizations from a sample to the population from which it was selected are known as ______.

Researchers usually evaluate skewness by eyeballing the distribution.

The Science, society, and Social Research

The Process and Problems of Social Research

Research Ethics and Research Proposals

Conceptualization and Measurement

Sampling and Generalizability

Research Design and Causation

Experiments

Survey Research

Qualitative Methods

Qualitative Data Analysis

Mixed Methods

Evaluation and Policy Research

Research Using Secondary Data and Big Data

Research Using Historical and Comparative Data and Content Analysis

Summarizing and Reporting

Filters

Exam 9: Quantitative Data Analysis

Precoding refers to assigning numeric codes to response categories on a survey prior to letting respondents complete the survey.

Explain the logic and components of regression analysis.What is the purpose of the correlation coefficient? A scatterplot?

Name at least three circumstances in which it is appropriate to add a third variable into a cross-tabulation.Why would you do each? What features of the bivariate relationship could be demonstrated using a three-variable crosstab?

If the mean is greater than the median,which of the following must be true?

The total number of cases in a distribution is called ______.

Typical standards in frequency table construction allow people to ______.

To consider context in a bivariate crosstabs,add ______?

The median is not affected by skewness of a variable's distribution.

γ\gammaγ measures the strength of association in ______.

If a variable contains more than 20 potential categories,it should be grouped in a frequency distribution.

Data cleaning is most important when downloading secondary data files.

When a standard deviation is calculated from sample data,the denominator in the formula SHOULD be ______.

Unique combinations of row and column variables in a cross-tabulation can be found in the table ______.

The process of assigning a unique numerical code to each response to survey questions is called ______.

Which summary statistic should be used for nominal variables?

In the group of numbers 1,1,6,7,8,37,37 is ______.

How do most survey organizations now prevent the entry of invalid codes?

When using primary data,what steps must be taken to ensure that the data quality is high,both during data entry and during data cleaning stages? What technologies facilitate both?

Statistics used for estimating the degree of confidence that can be placed in generalizations from a sample to the population from which it was selected are known as ______.

Researchers usually evaluate skewness by eyeballing the distribution.

The Science, society, and Social Research

The Process and Problems of Social Research

Research Ethics and Research Proposals

Conceptualization and Measurement

Sampling and Generalizability

Research Design and Causation

Experiments

Survey Research

Qualitative Methods

Qualitative Data Analysis

Mixed Methods

Evaluation and Policy Research

Research Using Secondary Data and Big Data

Research Using Historical and Comparative Data and Content Analysis

Summarizing and Reporting

Filters

$\gamma$ measures the strength of association in ______.