Using a one-way analysis of variance with three groups, a researcher obtains a s
ID: 3225712 • Letter: U
Question
Using a one-way analysis of variance with three groups, a researcher obtains a statistically significant F ratio. The group means are: Group 1, 76.3; Group 2, 70.1; Group 3, 74.2. If the value of LSD equals 3.1, the researcher should conclude that which pairs of population means are different?
a.) Populations 1 and 2, populations 1 and 3, and populations 2 and 3
b.) Only population 1 and population 2
c.) Populations 1 and 2 and populations 2 and 3
d.) Populations 1 and 2 and populations 1 and 3
If a Kruskal-Wallis H is statistically significant, the strength of the relationship between group membership and ranks is determined by computing:
a.) the phi coefficient.
b.) eta squared.
c.) Pearson’s r.
d.) the Glass rank-biserial correlation.
When testing a Kruskal-Wallis H for statistical significance, the critical value can be found in the:
a.) t table. b.) chi square table. c.) normal curve table.
d.) F table.
A researcher using the Kruskal-Wallis H test hopes to obtain statistical significance. The researcher would like the sums of the ranks of the groups in the study to be:
a.) equal to each other.
b.) equal to N (N + 1)/2.
c.) close to the expected sums of the ranks.
d.) very different from each other.
Explanation / Answer
c.) Populations 1 and 2 and populations 2 and 3.
d.) the Glass rank-biserial correlation.
b.) chi square table.
b.) equal to N (N + 1)/2.
70.1 (2) 74.2 (3) 76.3 (1) 6.2 2.1 74.2(3) 4.1Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.