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Exam 21: Quantitative Data Analysis

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Question 21

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The mean or median can be used to describe the central tendency of the variable "ethnicity."

A) True
B) False

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Question 22

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Assuming that there are no missing data,which line of three codes would reflect a data entry error for at least one of the following three variables: gender male or female; whether currently incarcerated yes or no; and ethnicity White/not Hispanic,African American,Hispanic,Asian American,Other?

A) 2 2 3
B) 3 3 6
C) 1 2 4
D) 2 1 5

E) A) and D)
F) B) and C)

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Question 23

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What is the purpose of data cleaning? How is it done?

Using a hypothetical example,illustrate how blending descriptive statistics with a qualitative inquiry can enhance the value of the qualitative inquiry as well as the interpretation of the descriptive statistics.

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

The following information was found in a codebook about social work students: COLUMNS DESCRIPTION 1 Enrollment status 1 = Full-time 2 = Part-time 3 = Other 4 Gender 1 = male 2 = female 5 Concentration 1 = Direct practice 2 = Clinical 3 = Micro 4 = Macro 5 = Communities 6 = Administration 7 = Child welfare 8 = Mental health Which of the following statements is true concerning the codebook?

Univariate analysis is the examination of the distribution of cases on only one variable at a time.

The mosrequent attribute,in either grouped or ungrouped data,is the

The mean is almost always sufficient in portraying the typical case in a distribution.

An interval variable is a discrete variable.

Provide an example of how descriptive statistics can be used in qualitative research.

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. $\begin{array}{ll}\text { Semiskilled } & \text { Republican } \\ \text { Unskilled } & \text { Republican } \\ \text { Semiskilled } & \text { Democrat } \\ \text { Skilled } & \text { Other } \\ \text { Semiskilled } & \text { Other } \\ \text { Unskilled } & \text { Other } \\ \text { Semiskilled } & \text { Democrat } \\ \text { Semiskilled } & \text { Democrat } \\ \text { Unskilled } & \text { Other }\end{array}$

A measure of dispersion describes

Which of the following measures of central tendency can be used at any level of measurement?

Given the following values,the median is 4,8,5,11,13,7,9,10,3

A research article reports that the mean number of group treatment sessions attended by a sample of people was 20,with a median of 12 and a mode of 10.Which of the following statements is/are true about the sample?

Half the cases are above the median and half the cases are below the median.

No detail is lost when using an ungrouped frequency distribution.

What is a codebook? Construct a codebook for the following questionnaire items: (a) Gender ( ) male ( ) 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 marital status? ( ) married ( ) widowed ( ) divorced ( ) separated ( ) never married