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Temple - CJ 2602 - Criminal Justice Exam - Study Guide

Created by: Emily Punchello Elite Notetaker

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Temple - CJ 2602 - Criminal Justice Exam - Study Guide

School: Temple University
Department: Criminal Justice
Course: Crikibal Justice Research and Analysis
Professor: Tba
Term: Summer 2015
Tags: spss, CriminalJusticeStatisitcs, ttest, chi, and ANOVA
Name: Criminal Justice Exam
Description: This is for the SPSS part of the Exam with t-test, Chi, ANOVA, Correlation
Uploaded: 12/02/2017
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background image SPSS Testing:
T-test SPSS
Always 2 tail  H 0 = The mean percent is equal  H 1  = the mean percent are not equal  Analyze  compare means  independent t –test sample  grouping 
variable = nominal/ordinal  define groups  Test variable ratio/scale 
Levene’s dig  o Below 0.05 = read bottom row 
o Above 0.05 read top row 
Sig (2-tail) = p – value  o Same rules as X 2 If H 0  – state H and stop there  If H 1  – state it and interpret confidence interval  o With 95% confidence  If unequal: reference table 1  Interpret upper and lower  With 95% confidence the mean percent of __________ is between lower 
and upper percent higher than _________
X 2 Blackboard  SPSS info  X  X 2  data set  X 2    - Variable 1 = nominal/ ordinal      - Variable 2 = nominal/ ordinal  H 0  – there is no statistical relationship between __________ and  __________ H 1  – there is a statistical relation ship between ___________ and  __________ Analyze  descriptive statistics  cross tabs  (skip to step 5 pretty much)  EX: 
Variable 1 – nominal/ordinal – gender – IV 
Variable 2 – nominal/ordinal – plea – DV
Analyze  descriptive statistics  cross tabs  put 1 variable in row(s) 
and 1 variable I column(s) (doesn’t really matter which one is in which)
 click statistics  hit chi square (give us p value) click appropriate 
measures of association (see chart below)  click cells  click in the 
percentage box “total” (this is for step 7) 
background image For appropriate measures of association (the blue is the ones we will 
use in SPSS)
Nominal (both variables are nominal)  - Contingences coefficient 
- Phi & Cramer’s V 
- Lambda
- Uncertainty coefficient    
Ordinal (only one variable is needed)  - Gamma 
- Somers ‘d
- Kendall’s tau-b
- Kendall’s tau-c 
Step 5: p-value  - Above 0.05 = H 0 - Below 0.05 = H 1 - If exactly 0.05 = no statistical relationship H 0 How to find P value in Chi Square tests  - Go to your charts 
- Pearson chi square and asymptotic significance (2-sided) 
- In EX: 0.027 = p value = H
1  If it is H 1  go to step 6 If it is H you just write “there is no statistical relationship between __________  and ________” Step 6:  Where to find lambda value in the charts 

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School: Temple University
Department: Criminal Justice
Course: Crikibal Justice Research and Analysis
Professor: Tba
Term: Summer 2015
Tags: spss, CriminalJusticeStatisitcs, ttest, chi, and ANOVA
Name: Criminal Justice Exam
Description: This is for the SPSS part of the Exam with t-test, Chi, ANOVA, Correlation
Uploaded: 12/02/2017
4 Pages 20 Views 16 Unlocks
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  • Notes, Study Guides, Flashcards + More!
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