CJUS 430 UNIT 3 IP 1
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Colorado Technical University *
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430
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Information Systems
Date
Dec 6, 2023
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docx
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3
Uploaded by jmburks78
Jada Burks
CJUS 430
UNIT 3 IP 1
December 3, 2023
Chi-Square Data Analysis
What is the column total for Caucasian?
The total for Caucasian is = 26
What is the column total for African-American?
The total for African-American is = 24
The Column totals are 26 + 24 = 50
What is the row total for Denver County?
The total for Denver County is = 19
What is the row total for El Paso County?
The total for El Paso County is = 10
What is the row total for Pueblo County?
The total for Pueblo County is = 21
The Row totals are:
19 +10+ 21 = 50
Are race and originating jurisdiction significantly dependent? How do you know?
The race and originating jurisdiction are not significantly dependent. After reviewing the
two variables in the data analysis, there are no factors to prove a significant relationship of the
two. The variables are independent.
What is the final chi-square value?
The final chi-square value is 13.0928 .
Each cell value was calculated with the observed
vs. predicted data information to get the final chi-square.
How many degrees of freedom are there for this chi-square table?
There are 2 degrees of freedom in the chi-square table.
(2-1) x (3-1) = 2
What is the value for the 0.05 significance level and 2 degrees of freedom on the Chi-Square
Distribution Values Chart?
Using the final data for the significance level of 0.05 along with 2 degrees of freedom,
the value is 5.991
Do you reject or accept the null hypothesis that states, “Originating jurisdiction and race are not
significantly dependent (they are independent)"?
The null hypothesis that states the “originating jurisdiction and race are not significantly
dependent. The Null hypothesis is rejected due to being less than 5.991.
References:
Kahn Academy, (n.d.) Contingency table chi-square test (video)
Contingency table chi-square
test (video) | Khan Academy
Khan Academy, (n.d.) Filling out frequency table for independent events (video)
https://www.khanacademy.org/math/statistics-probability/inference-categorical-data-chi-
square-tests/chi-square-tests-for-homogeneity-and-association-independence/v/contingency-
table-chi-square-test
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