Question
In: Statistics and Probability
Briefly describe a research study that would use the chi-square test to analyze the data obtained
Briefly describe a research study that would use the chi-square test to analyze the data obtained
Solutions
Expert Solution
A research paper examines the impact of collecting and analyzing sequential data from the same sample using the chi-square test. Researchers in rehabilitation frequently analyze categorical data collected repeatedly from the same sample. Design: Simulations were conducted using the chi-square test to analyze data with correlations between pretest and posttest ranging from .20 to .80. The simulations were analyzed using the standard chi-square based on a 2 × 2 contingency table. Results: An incidence of type 1 errors of approximately .30 for an expected alpha of .05 was found when the correlation (serial dependence) between pretest and posttest was high (phi = .80). For simulations using an a = .01, the type 1 error rate was .18 for data with substantial correlation (phi = .80). Conclusion: Rehabilitation researchers who use the chi-square test with data collected repeatedly from the same sample risk committing a type 1 error and misinterpreting their results.
orchestra answered 1 year agoRelated Solutions
Chi Square Test We will now use Excel to run an example of a chi square...
Chi Square Test
We will now use Excel to run an example of a chi square test.
Chi square test is checking the independence of two variables. Our
example will test if taking hormonal pills and being overweight are
related. We will test the independence on 200 random patients.
Thus, N=200. They will be divided first into two groups, those who
take hormonal pills and those who do not. Second, they will be
divided into three groups based on weight,...
Use the following data to conduct a Chi-square test for each region of the company in...
Use the following data to conduct a Chi-square test for each
region of the company in the same manner you viewed in the
video:
Region
Expected
Actual
Southeast
Defined
100
98
Open
100
104
Northeast
Defined
150
188
Open
150
214
Midwest
Defined
125
120
Open
125
108
Pacific
Defined
200
205
Open
200
278
Step 3:
Write an 800–1,000-word essay, utilizing APA formatting, to
discuss the following:
Describe why hypothesis testing is important to
businesses.
Report your findings from...
Use the following data to conduct a Chi-square test for each region of the company in...
Use the following data to conduct a Chi-square test for each
region of the company in the same manner you viewed in the
video:
Region
Expected
Actual
Southeast
Defined
100
98
Open
100
104
Northeast
Defined
150
188
Open
150
214
Midwest
Defined
125
120
Open
125
108
Pacific
Defined
200
205
Open
200
278
Step 3:
Write an 800–1,000-word essay, utilizing APA formatting, to
discuss the following:
Describe why hypothesis testing is important to businesses.
Report your findings from...
Use the following data to conduct a Chi-square test for each region of the company in...
Use the following data to conduct a Chi-square test
for each region of the company in the same manner you viewed in the
video:
RegionExpected
Actual
Southeast
Defined
10098
Open
100104Northeast
Defined
150188
Open
150214Midwest
Defined
125120
Open
125108Pacific
Defined
200205
Open
200278
Step 3:
Write an 800–1,000-word essay, utilizing APA
formatting, to discuss the following:
Describe why hypothesis testing is important to
businesses.
Report your findings from each Chi-square test that
you conducted.
Based solely on the Chi-square test,...
Use the chi-square test for goodness of fit to determine if the data shown below are...
Use the chi-square test for goodness of fit to determine if the
data shown below are consistent with an inheritance pattern of
simple dominance. Use p = 0.05 for determining
significance.
Cross: Aa x Aa
Offspring:
70 dominant phenotype
30 recessive phenotype
A. The data are consistent with a simple dominance pattern of
inheritance.
B. The data are not consistent with a simple dominance pattern
of inheritance.
2. Use the Chi-Square test procedure to solve the following research question: A psychologist seeks to...
2. Use the Chi-Square test procedure to solve the following
research question: A psychologist seeks to examine whether certain
mental health issues are more prevalent in a sample of violent
criminal offenders (1,000) compared to the average population.
Observed
Expected
Anxiety disorder
152
146 (14.6 x 1000)
Mood disorder
112
80 (8.0 x 1000)
Personality disorder
195
90 (9.0 x 1000)
Schizophrenia
75
15 (1.5 x 1000)
None
521
669 (66.9 x 1000)
2a. Calculate and provide the chi-square statistic...
Describe, through an example or two, the use of a contingency table analysis (Chi Square test)...
Describe, through an example or two, the use of a contingency
table analysis (Chi Square test) in a business research project.
What conclusion(s) could we draw from a Chi Square test?
Describe, through an example or two, the use of a contingency table analysis (Chi Square test)...
Describe, through an example or two, the use of a contingency
table analysis (Chi Square test) in a business research project.
What conclusion(s) could we draw from a Chi Square test?
Choose either the Chi Square Goodness of Fit test OR the Chi Square Test for Independence....
Choose either the Chi Square Goodness of Fit test OR the Chi
Square Test for Independence. Give an example of a research
scenario that would use this test, including your hypothesis AND
what makes the test suitable for your variables chosen
think of a research scenario in which the data would be analyzed using Chi-Square (two variables...
think of a research scenario in which the data would be analyzed
using Chi-Square (two variables measured at a nominal level).
Provide a brief research scenario, much like those found in
assignment problems.
Identify the independent (antecedent) and dependent (criterion)
variables.
Discuss how you would operationally define those variables.
Identify who your participants would be and the steps you would
need to take to ensure that your research adheres to ethical
standards.
Discuss how aspects of your research design and...
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