CHI Square Goodness of Fit Test Flashcards
commonly used for testing relationships between categorical variables.
Chi Square statistic
The _________ of the Chi-Square test is that no relationship exists on the
categorical variables in the population; they are ________.
null hypothesis, independent
most commonly used to evaluate Tests of Independence when using a crosstabulation (also known as a bivariate table).
Chi-Square statistic
________________ presents the
distributions of two categorical variables simultaneously, with the intersections of the categories
of the variables appearing in the cells of the table.
Crosstabulation
The ______________ assesses whether
an association exists between the two variables by comparing the observed pattern of responses
in the cells to the pattern that would be expected if the variables were truly independent of each
other.
Test of Independence
T or F: Calculating the Chi-Square statistic and comparing it against a critical value from the ChiSquare distribution allows the researcher to assess whether the observed cell counts are significantly different from the unexpected cell counts.
False, expected
O means
observed frequency (the observed counts in the cells)
E
expected frequency if NO relationship existed between the variables
T or F: ChiSquare statistic is based on the difference between what is actually observed in the data and what
would be expected if there was truly relationship between the variables.
False, no relationship
1st step in solving 𝜒2
State the null and alternative hypothesis
x2a, (v-1)
One Tailed
x2a/a, (v-1)
Two Tailed
x2c > x2a
Reject Ho
a test that measures how expectations compare to actual observed data (or model results)
chi-square (χ2) statistic
T or F: The data used in calculating a chi-square statistic must be order, raw, mutually exclusive, drawn from independent variables, and drawn from a large enough
sample.
False, Random(order)
