Please answer the following multiple choice questions: Thanks 1. When comparing
ID: 3262604 • Letter: P
Question
Please answer the following multiple choice questions: Thanks
1. When comparing the means among 3 groups, which of the following tests would be the BEST option?
t-test
ANOVA
Chi-Square
Confidence intervals
2. Using multiple t-test increases the risk for:
Sampling Error
Type I Error
Type II Error
No Error
3. When writing a null hypothesis for ANOVA:
The means of each group are not equal
The means of each group are equal
The means of each group reflect a direction of response
The means of only one group is equal
4. ANOVA determines whether the differences seen in the sample means are significantly larger than what would be expected by chance.
True
False
5. If a F-ratio is near 1.00, there is most likely very little difference among the group means and will most likely not be significant.
True
False
6. The degrees of freedom (df) for the numerator of the F-ratio is:
Number of participants – 1
Number of groups – 1
Number of participants – Number of groups
7. The degrees of freedom (df) for the denominator of the F-ratio is:
Number of participants – 1
Number of groups – 1
Number of participants – Number of groups
8. When looking at your data you note a F-ratio with a corresponding p-value of 0.042. For an alpha of .05, you conclude:
There is a significant difference
There is no significant difference
Accept the null
Fail to reject the null
9. Post-hoc analysis can help identify where the differences exist between groups and whether the differences are significant.
True
False
10. A post-hoc analysis is commonly conducted on which statistical test:
ANOVA or ANOVAR
Chi-square
t-test
Explanation / Answer
1. Answer is ANOVA
2. Answer is sampling error
3. Answer is The means of all groups are equal
4.Answer is True
5. Answer is True
6. Answer is Number of groups -1
7.Answer is Number of participants - number of Groups
8. Answer is there is significance difference
9. Answer is False
10. Answer is Anova or Anovar