Nonparametric tests should not be used when ______.
the associations being tested involve categorical variables
the dependent variables are ordinal scales
the assumptions of parametric tests are met
the population distribution is heavily skewed
The chi-square tests are used to analyze ______.
Medians
frequency of data
continuous variables
skewness
The ______ tests are more powerful than the ______ tests, whichmeans the ______ is higher for nonparametric tests.
parametric; nonparametric; type II error
nonparametric; parametric; type I error
parametric; nonparametric; type I error
nonparametric; parametric; type II error
If a 3 × 3 table is presented, then you know that a study used______ independent variables each with ______ categories.
nine; two
two; four
three; three
two; three
Expected frequencies are obtained in rows-by-columns tableassuming that the row and column categorizations are ______.
independent of each other
equal
related to each other
dependent on each other
Which of the following is a possible null hypothesis for achi-square test?
The two categorical variables are unrelated in thepopulation.
The means of populations in two independent groups areequal.
The two categorical variables are related in the population.
The distribution of scores for the first population is differentfrom the distribution of scores for the second population.
If you have a 5 × 5 frequency table, then the critical value ofchi-square would be based on ______ degrees of freedom.
16
8
10
25
Below are the number of acts of graffiti that occur on wallspainted white, painted blue, or covered with chalkboard.Ho is frequencies of graffiti are equal in thepopulation. With N = 30, fe =N/k = 30/3 = 10 for each category.
What is the critical value for this test?
White | Blue | Chalk |
fo = 8 | fo = 8 | fo = 8 |
fe = 10 | fe = 10 | fe = 10 |
3.84
5.99
9.21
9.57
Below are the number of acts of graffiti that occur on wallspainted white, painted blue, or covered with chalkboard.Ho is frequencies of graffiti are equal in thepopulation. With N = 30, fe =N/k = 30/3 = 10 for each category.
What is the appropriate obtained value for thistest?
White | Blue | Chalk |
fo = 8 | fo = 8 | fo = 8 |
fe = 10 | fe = 10 | fe = 10 |
7.80
2.60
3.90
5.99
Below are the number of acts of graffiti that occur on wallspainted white, painted blue, or covered with chalkboard.Ho is frequencies of graffiti are equal in thepopulation. With N = 30, fe =N/k = 30/3 = 10 for each category.
In the population, we expect _____% of graffiti on white walls,_____% on blue walls, and _____% on chalkboard walls.
White | Blue | Chalk |
fo = 8 | fo = 8 | fo = 8 |
fe = 10 | fe = 10 | fe = 10 |
58%; 21%; 19%
27%; 17%; 57%
50%; 25%; 25%
33%; 33%; 33%
