Question 1

You discover that the years of marriage before a divorce for nine Whites and nine non-Whites are as follows: Whites 12, 1, 8, 9, 10, 17, 3, 6, 6 Non-Whites 1, 9, 15, 18, 11, 13, 14, 7, 3
Which statement about this data is TRUE?

Accepted Answer

A)   On average, non-Whites stay married longer prior to divorce than the Whites.
B)   There is no difference in the range for the two groups.
C)   The mean years of marriage prior to divorce are the same for both groups.
D)   The median years of marriage prior to divorce are three years longer for Whites than non-whites. A

Question 2

Use the information in this table to answer the following questions.
 $$\begin{array} { c l l } 
\text { TYPE OF CRIME } & \text { Male } & \text { Female } \
\hline \text { Violent } & 20 \% & 10 \% \
\hline \text { Property } & 80 \% & 90 \% \
& 100 \% & 100 \% \
& ( 800 ) & ( 400 )
\end{array}$$
-How many males were arrested for committing a violent crime?

Accepted Answer

A)   140
B)   160
C)   56
D)   20  B

Question 3

Refer to the information provided in Table 12.3 below to answer the questions that follow.
Table 12.3:
Annual Family Income and Education* Statistics for Three Neighborhoods
 $$\begin{array} { l | llllll } 
&  { \text { GLENBROOK } } && { \text { MEADOWBROOK } } && { \text { ELMBROOK } } \
& \text { Income } & \text { Education } & \text { Income } & \text { Education } & \text { Income } & \text { Education } \
\hline \text { Mean } & \$ 78,000 & 17 \text { Years } & \$ 28,000 & 15 \text { Years } & \$ 16,000 & 11 \text { Years } \
\text { Median } & \$ 27,000 & 18 & \$ 28,000 & 16 & \$ 18,000 & 11 \
\text { Mode } & \$ 26,000 & 20 & \$ 28,000 & 11 & \$ 14,000 & 11 \
\text { Stand Dev. } & \$ 8,000 & 3 & \$ 2,000 & 6 & \$ 3,000 & 1.0 \
\text { (N) } & ( 300 ) & & ( 300 ) & & ( 300 ) &
\end{array}$$ *4 yrs college = 16 yrs; masters/law degrees = 18 yrs; Ph.D/MD degrees = 20 yrs.
-Which neighborhood has the largest number of families with the lowest income?

Accepted Answer

A)   Glenbrook
B)   Meadowbrook
C)   Elmbrook
D)   The neighborhoods have equal number members of the lowest income.  C

Question 4

How many people in the study who have more than a college degree 17+ years education) were arrested for committing a medium violent crime?

Accepted Answer

A)   160
B)   20
C)   180
D)   insufficient information

Question 5

Based on Table 12.4, what type of relationship is there between degree of violence in the crime committed and level of education?

Accepted Answer

A)   positive relationship
B)   non-linear relationship
C)   no relationship, independence
D)   negative relationship

Question 6

The mean is

Accepted Answer

A)   8
B)   8.5
C)   10
D)   9.5

Question 7

Refer to the information provided in Table 12.3 below to answer the questions that follow.
Table 12.3:
Annual Family Income and Education* Statistics for Three Neighborhoods
 $$\begin{array} { l | llllll } 
&  { \text { GLENBROOK } } && { \text { MEADOWBROOK } } && { \text { ELMBROOK } } \
& \text { Income } & \text { Education } & \text { Income } & \text { Education } & \text { Income } & \text { Education } \
\hline \text { Mean } & \$ 78,000 & 17 \text { Years } & \$ 28,000 & 15 \text { Years } & \$ 16,000 & 11 \text { Years } \
\text { Median } & \$ 27,000 & 18 & \$ 28,000 & 16 & \$ 18,000 & 11 \
\text { Mode } & \$ 26,000 & 20 & \$ 28,000 & 11 & \$ 14,000 & 11 \
\text { Stand Dev. } & \$ 8,000 & 3 & \$ 2,000 & 6 & \$ 3,000 & 1.0 \
\text { (N) } & ( 300 ) & & ( 300 ) & & ( 300 ) &
\end{array}$$ *4 yrs college = 16 yrs; masters/law degrees = 18 yrs; Ph.D/MD degrees = 20 yrs.
-Which neighborhood has an income distribution that is close to a normal distribution?

Accepted Answer

A)   Glenbrook
B)   Meadowbrook
C)   Elmbrook
D)   All neighborhoods are normally distributed.

Question 8

Refer to the information provided in Table 12.3 below to answer the questions that follow.
Table 12.3:
Annual Family Income and Education* Statistics for Three Neighborhoods
 $$\begin{array} { l | llllll } 
&  { \text { GLENBROOK } } && { \text { MEADOWBROOK } } && { \text { ELMBROOK } } \
& \text { Income } & \text { Education } & \text { Income } & \text { Education } & \text { Income } & \text { Education } \
\hline \text { Mean } & \$ 78,000 & 17 \text { Years } & \$ 28,000 & 15 \text { Years } & \$ 16,000 & 11 \text { Years } \
\text { Median } & \$ 27,000 & 18 & \$ 28,000 & 16 & \$ 18,000 & 11 \
\text { Mode } & \$ 26,000 & 20 & \$ 28,000 & 11 & \$ 14,000 & 11 \
\text { Stand Dev. } & \$ 8,000 & 3 & \$ 2,000 & 6 & \$ 3,000 & 1.0 \
\text { (N) } & ( 300 ) & & ( 300 ) & & ( 300 ) &
\end{array}$$ *4 yrs college = 16 yrs; masters/law degrees = 18 yrs; Ph.D/MD degrees = 20 yrs.
-Which neighborhood has the greatest average variation distribution) among the incomes of families?

Accepted Answer

A)   Glenbrook
B)   Meadowbrook
C)   Elmbrook
D)   The neighborhoods are all very diverse in income.

Question 9

Discuss the concept of control as it is used in trivariate analysis. In what ways it is similar to or different from control in experiments?

Accepted Answer

The answer of Discuss the concept of control as it...

Question 10

Explain the difference between the three measures of variation: range, percentiles, and standard deviation.

Accepted Answer

The answer of Explain the difference between the three measures...

Question 11

Professor Doner asked you to interpret a Pearson product's moment correlation coefficient of .93. You say

Accepted Answer

A)   it indicated an error in calculations.
B)   it indicated an exceedingly strong relationship.
C)   it indicated a moderate relationship.
D)   it indicated a weak relationship.

Question 12

Refer to the information provided in Table 12.1 below to answer the questions that follow.
Table 12.1:
2001 survey of 1,000 randomly selected adult residents of Seattle, Years of schooling by whether or not one agrees with the statement,
"Seattle should require the registration of hand guns with the city police department."
 $$\begin{array} { l | c c c c c c } 
\text { Years }& \text { Strongly } && &{ \text { Strongly } } \
 \text { of School }&\text { Agree } & \text { Agree } & \text { Disagree } & \text { Disagree } & \text { Total } & ( \mathrm { N } ) \
\hline \text { Under } 8 & 30 \% & 25 \% & 30 \% & 15 \% & 100 \% & ( 100 ) \
8 - 11 & 35 \% & 20 \% & 30 \% & 15 \% & 100 \% & ( 100 ) \
12 & 40 \% & 30 \% & 15 \% & 5 \% & 100 \% & ( 200 ) \
13 - 15 & 50 \% & 25 \% & 20 \% & 5 \% & 100 \% & ( 300 ) \
16 & 60 \% & 25 \% & 10 \% & 5 \% & 100 \% & ( 200 ) \
17 \text { or more } & 80 \% & 10 \% & 5 \% & 5 \% & 100 \% & ( 100 )
\end{array}$$
-After examining the bivariate relationship between years of schooling and knowledge about politics, Dr. Bushhead controls for hair color. He finds that the relationship in partial tables is identical to the bivariate tables. In the elaboration paradigm, this is

Accepted Answer

A)   replication pattern.
B)   identification pattern.
C)   specification pattern.
D)   explanation pattern.

Question 13

A "codebook" is

Accepted Answer

A)   a document that tells the researcher where variables are located in the data file and what numbers go with what variable attributes.
B)   the set of instructions that tells interviewers or experimenters how to treat respondents or subjects.
C)   an unnecessary part of data analysis since computers were invented.
D)   only used in existing statistics research.

Question 14

Refer to the information provided in Table 12.1 below to answer the questions that follow.
Table 12.1:
2001 survey of 1,000 randomly selected adult residents of Seattle, Years of schooling by whether or not one agrees with the statement,
"Seattle should require the registration of hand guns with the city police department."
 $$\begin{array} { l | c c c c c c } 
\text { Years }& \text { Strongly } && &{ \text { Strongly } } \
 \text { of School }&\text { Agree } & \text { Agree } & \text { Disagree } & \text { Disagree } & \text { Total } & ( \mathrm { N } ) \
\hline \text { Under } 8 & 30 \% & 25 \% & 30 \% & 15 \% & 100 \% & ( 100 ) \
8 - 11 & 35 \% & 20 \% & 30 \% & 15 \% & 100 \% & ( 100 ) \
12 & 40 \% & 30 \% & 15 \% & 5 \% & 100 \% & ( 200 ) \
13 - 15 & 50 \% & 25 \% & 20 \% & 5 \% & 100 \% & ( 300 ) \
16 & 60 \% & 25 \% & 10 \% & 5 \% & 100 \% & ( 200 ) \
17 \text { or more } & 80 \% & 10 \% & 5 \% & 5 \% & 100 \% & ( 100 )
\end{array}$$
-An elementary school teacher has three classes. She finds the following mean and standard deviations for student I.Q. scores. $$\begin{array} { l l c } 
& \text { Mean } & \text { Standard Deviation } \
\hline \text { Class \#1 } & 106 & 32 \
\hline \text { Class \#2 } & 104 & 9 \
\text { Class \#3 } & 110 & 16 \
\hline
\end{array}$$ She knows she is more effective if the students are at similar ability levels and the I.Q. measures ability level in this situation. Which class is she likely to be most effective with? [NOTE: I.Q. scores for the general population range from about 70 to 130 with a mean of 100].

Accepted Answer

A)   Class #1
B)   Class #2
C)   Class #3
D)   All classes equally

Question 15

In reading a table someone else has constructed, the rule of thumb is

Accepted Answer

A)   if the table is percentaged down, read down.
B)   if the table is percentaged across, read across.
C)   if the table is percentaged down, read across, and if the table is percentaged across, read up and down.
D)   all of the above

Question 16

Professor Smith found a relationship between education and occupation. However, when she introduced age as a test factor, the relationship between education and occupation disappeared in the partials. This illustrates

Accepted Answer

A)   explanation pattern.
B)   specification pattern.
C)   replication pattern.
D)   interpretation pattern.

Question 17

Statistical analysis that allows scientists to confidently make accurate statements about a population is called

Accepted Answer

A)   frequency distribution.
B)   descriptive statistics.
C)   univariate statistics.
D)   inferential statistics.

Question 18

Describe three univariate statistics. Use a unique example to illustrate your comprehension of univariate statistics.

Accepted Answer

The answer of Describe three univariate statistics. Use a unique...

Question 19

What does the statement, "It is statistically significant at the .10 level," mean? Is a Type I or Type II error more likely if a .05 level had been used? Explain.

Accepted Answer

The answer of What does the statement, "It is statistically...

Question 20

Rocky Rococo found a correlation of .001 between the amount of pizza a person consumed in a year and the number of Italian phrases the person could correctly translate into English. From this, he should conclude

Accepted Answer

A)   there is a strong negative relationship between the variables.
B)   there is no relationship between the variables.
C)   there is a weak negative relationship between the variables.
D)   there is a strong positive relationship between the variables.

Exam 12: Analysis of Quantitative Data

You discover that the years of marriage before a divorce for nine Whites and nine non-Whites are as follows: Whites 12, 1, 8, 9, 10, 17, 3, 6, 6 Non-Whites 1, 9, 15, 18, 11, 13, 14, 7, 3 Which statement about this data is TRUE?