Chi–Squares
In conducting a chi-square test for goodness of fit using a two-way table, why is considering the variability around the expected counts crucial?
How would you interpret an interaction term that has been added into a logistic regression model analyzing categorical data from a two-way table with sufficient sample sizes?
A survey was conducted to examine the preference for different smartphone brands among three age groups: teenagers (13-19 years), young adults (20-30 years), and adults (31-50 years). 50 teenagers preferred Apple, 30 teenagers preferred Samsung, 60 young adults preferred Apple, 40 young adults preferred Samsung, 40 adu...
If a researcher uses expected counts to assess homogeneity across groups in a two-way table but observes some expected counts below 5, how might this affect their conclusions?
Which measurement would NOT be used to examine variability among expected counts within cells?
When researchers divide the population into groups based on characteristics and then randomly select from each group, they are using which method?
Researchers investigated the relationship between gender (male and female) and hair color (blonde and brunette). There are 30 male blondes, 45 male brunettes, 20 female blondes, and 35 female brunettes. What is the table total?
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What statistic measures center in a single categorical variable's distribution presented in a two-way table?
Which phrase best describes "expected frequency" in the context of a contingency table?
What challenge is presented by having all expected frequencies exceed five but one or two expected frequencies below five in a chi-square test for homogeneity?