CRJ_575_Module_5_Discussion
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Colorado State University, Global Campus *
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575
Subject
Statistics
Date
Jan 9, 2024
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docx
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Uploaded by MinkMasyer64
Research studies have found that race is a consistent predictor of attitudes toward the police. Some
researchers suggest that people’s experience during police stops can be an important reason for their
attitudes toward police. Questions have been raised about bias in the decision to initiate a stop and in
other aspects of the traffic stop: the length of the stop and the decision to cite, search, or use force.
This discussion provides an opportunity for you to explore, with the data set
32022
PoliceContactSurvey.sav
Download 32022 PoliceContactSurvey.sav
, whether the experience with
police during a traffic stop differs significantly between white and black respondents by using the
methods you’ve learned in Module 5. Race will be treated as the independent variable in this exercise.
First, examine the measurement (categories) of race
in the data file.
Second, examine the meaning and measurement of the following variables: V8, V9, V10, V6A,
V6B, 12B, V6E, 6H, V47, V6G, V8A5, V8A1, or some other variables of your interest.
Select two dependent variables and perform crosstabs; select statistics which include Chi-
Square, Lambda, and Cramer’s V for analysis.
Before performing statistics, you need to take the following steps to ensure that this analysis will
only include the information of the respondents who clearly identified themselves as black or
white.
a.
In the editing bar, click “Data”.
b.
In the dropdown box, select “Select Cases,” toward the bottom of the box.
c.
In the box of Select Cases, check “If condition is satisfied” and check the choice “if”.
d.
In the “if” box, type “Race=1 or Race=2,” click “Continue”.
e.
Click “OK”.
With this procedure, you tell SPSS that your following analysis will only include the cases in which the
respondent clearly identified him/herself as white (1) or black (2).
In your initial post, 1) state your hypotheses and null hypotheses, 2) state the meaning of each
dependent variable you select, and 3) state the findings with the properly numbered tables and
conclusions in reference to the null hypotheses.
Note
: The expected counts in each cell must be 5 or greater. If this rule is violated in a table, you should
consider changing the dependent variable and try another instead.
In your initial post, 1) state your hypotheses and null hypotheses, 2) state the meaning of each
dependent variable you select, and 3) state the findings with the properly numbered tables and
conclusions in reference to the null hypotheses.
What would I state for my hypotheses and null hypotheses, state the meaning of each dependent
variable (Police shouted at respondent, and police cursed at respondent), and state the findings with the
properly numbered tables and conclusions in reference to the null hypotheses.
Discussion 5 Formulated
I just want to say upfront that in all honesty, I had such a difficult time with this exercise. I’m not sure
what or where I went wrong. I became so flustered that I’m not sure what steps I took in the end to get
any data. Things just seem to go wrong when taking the steps to ensure that this analysis only includes
the information of the respondents who clearly identified as black or white. Dr. Koehle, I followed the
instructions exactly but upon glancing at the output once that statistics were run, nowhere did I see
anything to do with race. So, I repeated everything several times and still experienced the same problem.
Eventually, I just tried a different way and even though I know it can’t possibly be the correct way, I am
posting this because I did try….many, many times. Please, if anyone could possibly point out or see
where I went wrong or explain to me from beginning to end the correct way to perform the steps, I’d
appreciate it. Thank you.
Hypotheses: Null Hypothesis (HO) – There is no significant association between whether the police
shouted at the respondent and whether the police cursed at the respondent among individuals who
identified themselves as Black only or White only.
Alternative Hypothesis (H1) – There is a significant association between whether the police shouted at
the respondent and whether the police cursed at the respondent among individuals who identified
themselves as Black only or White only.
Meaning of Dependent Variables: V6A Police Shouted At Respondent (Dependent variable 1) – This
variable indicates whether the police shouted at the respondent during a specific incident or encounter.
It is a categorical variable with two levels which are Yes or No. In the context of my analysis, it represents
whether the respondent experienced shouting, such as verbal aggression, from the police.
V6B Police Cursed at Respondent (Dependent variable 2) – Indicates whether the police used offensive
language or cursed at the respondent during a specific incident or encounter. This too is a categorical
variable with two levels being Yes or No. It represents whether the respondent experienced verbal
abuse, or cursing, from the police.
Findings and Conclusions:
Table 1: Crosstabulation of Police Shouted at Respondent and Police Cursed at Respondent
POLICE CURSED AT RESPONDENT
Yes
No
Total
POLICE SHOUTED AT
RESPONDENT
Yes
39
45
84
No
3
28
31
Total
42
73
115
Table 2: Chi-Square Tests
Pearson Chi-Square: χ² = 13.192, df = 1, p < .001
Continuity Correction: χ² = 11.654, df = 1, p < .001
Likelihood Ratio: χ² = 15.231, df = 1, p < .001
Fisher's Exact Test: p < .001
Table 3: Directional Measures
Lambda (Symmetric): 0.000
Lambda (POLICE SHOUTED AT RESPONDENT Dependent): 0.000
Lambda (POLICE CURSED AT RESPONDENT Dependent): 0.000
Goodman and Kruskal tau (POLICE SHOUTED AT RESPONDENT Dependent): 0.115
Goodman and Kruskal tau (POLICE CURSED AT RESPONDENT Dependent): 0.115
Table 4: Symmetric Measures
Phi: 0.339
Cramer's V: 0.339
Based on the analysis, the null hypothesis (H)) can be rejected for the reason that there is no significant
association between whether the police shouted at the respondent and whether the police cursed at the
respondent among individuals who identified themselves as Black only or White only. The p-values from
all statistical tests are highly significant (p<.001) indicating a strong association between these variables.
Accepting the alternative hypothesis (H1),:, The Lambda and Cramer's V statistics also show an
association between these variables, with Cramer's V indicating a moderate effect size (0.339).
Therefore, the alternative hypothesis (H1) is accepted that there is a significant association between
whether the police shouted at the respondent and whether the police cursed at the respondent. There is
a significant association between whether the police shouted at the respondent and whether the police
cursed at the respondent. This may suggest that among respondents who had identified as Black or
White only, experiences of police shouting and cursing are related while there could be an association of
an occurrence of both shouting and cursing during police encounters.
The Following tables ran in the SPSS software:
Frequencies
Statistics
POLICE
SHOUTED AT
RESPONDEN
T
POLICE
CURSED AT
RESPONDEN
T
RACE OF
RESPONDEN
T
N
Valid
116
115
68003
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Missing
67887
67888
0
Frequency Table
POLICE SHOUTED AT RESPONDENT
Frequenc
y
Percent
Valid
Percent
Cumulative
Percent
Valid
Yes
85
.1
73.3
73.3
No
31
.0
26.7
100.0
Total
116
.2
100.0
Missing
Out of
universe/missing
67887
99.8
Total
68003
100.0
POLICE CURSED AT RESPONDENT
Frequenc
y
Percent
Valid
Percent
Cumulative
Percent
Valid
Yes
42
.1
36.5
36.5
No
73
.1
63.5
100.0
Total
115
.2
100.0
Missing
Out of
universe/missing
67887
99.8
Do not know
1
.0
Total
67888
99.8
Total
68003
100.0
RACE OF RESPONDENT
Frequenc
y
Percent
Valid
Percent
Cumulative
Percent
Valid
White
only
60204
88.5
88.5
88.5
Black only
7799
11.5
11.5
100.0
Total
68003
100.0
100.0
Crosstabs
Case Processing Summary
Cases
Valid
Missing
Total
N
Percent
N
Percent
N
Percent
POLICE SHOUTED AT
RESPONDENT *
POLICE CURSED AT
RESPONDENT
115
0.2%
67888
99.8%
68003
100.0%
POLICE SHOUTED AT RESPONDENT * POLICE CURSED AT
RESPONDENT Crosstabulation
Count
POLICE CURSED AT
RESPONDENT
Total
Yes
No
POLICE SHOUTED AT
RESPONDENT
Yes
39
45
84
No
3
28
31
Total
42
73
115
Chi-Square Tests
Value
df
Asymptotic
Significance
(2-sided)
Exact Sig. (2-
sided)
Exact Sig. (1-
sided)
Pearson Chi-Square
13.192
a
1
<.001
Continuity Correction
b
11.654
1
<.001
Likelihood Ratio
15.231
1
<.001
Fisher's Exact Test
<.001
<.001
Linear-by-Linear
Association
13.077
1
<.001
N of Valid Cases
115
a. 0 cells (0.0%) have expected count less than 5. The minimum expected count is 11.32.
b. Computed only for a 2x2 table
Directional Measures
Value
Asymptotic
Standard
Error
a
Nominal by
Nominal
Lambda
Symmetric
.000
.000
POLICE SHOUTED AT
RESPONDENT
Dependent
.000
.000
POLICE CURSED AT
RESPONDENT
Dependent
.000
.000
Goodman and Kruskal
tau
POLICE SHOUTED AT
RESPONDENT
Dependent
.115
.046
POLICE CURSED AT
RESPONDENT
Dependent
.115
.045
Directional Measures
Approximate
T
Nominal by
Nominal
Lambda
Symmetric
.
b
POLICE SHOUTED AT
RESPONDENT
Dependent
.
b
POLICE CURSED AT
RESPONDENT
Dependent
.
b
Goodman and Kruskal
tau
POLICE SHOUTED AT
RESPONDENT
Dependent
POLICE CURSED AT
RESPONDENT
Dependent
Directional Measures
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Approxi
mate
Signific
ance
Nominal by
Nominal
Lambda
Symmetric
.
b
POLICE SHOUTED AT
RESPONDENT
Dependent
.
b
POLICE CURSED AT
RESPONDENT
Dependent
.
b
Goodman and Kruskal
tau
POLICE SHOUTED AT
RESPONDENT
Dependent
<.001
c
POLICE CURSED AT
RESPONDENT
Dependent
<.001
c
a. Not assuming the null hypothesis.
b. Cannot be computed because the asymptotic standard error equals zero.
c. Based on chi-square approximation
Symmetric Measures
Value
Approximate
Significance
Nominal by
Nominal
Phi
.339
<.001
Cramer's
V
.339
<.001
N of Valid Cases
115
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