A significant F test means: a. Homogeneity of variance b. Unequal groups c. The researcher needs...
A significant F test means:
| a. |
Homogeneity of variance |
|
| b. |
Unequal groups |
|
| c. |
The researcher needs to reduce p-value |
|
| d. |
Data transformation is not necessary |
Homework Answers
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A significant F test means:
a.
Homogeneity of variance
b.
Unequal groups
c.
The researcher needs...
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A researcher conducts a ONEWAY ANOVA with 4 groups. The critical value of F is 4.6. The researcher calculates a value of F from the data of 3.2, which has an associated p value of .14. This means: a. at least one of the groups is different from the other groups. b. none of the answers are correct c. the researcher needs to do a posthoc test d. there is a 14% chance the data are in the null distribution
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1. When do we use an independent groups t-test? a. b. c. d. When we are comparing means from one sample that has been measured twice. When we are comparing means from two different samples. When we are comparing a sample mean to a population mean. When we are comparing two population means. 2. Which of the following is true regarding the use of t-tests for true experiments versus quasi-experimental designs? a. b. We use the same t-test whether it...
a researcher records the following data for the each of three groups A researcher records the...
a researcher records the following data for the each of three
groups
A researcher records the following data for each of three groups. Group C 13 10 13 10 13 13 12 10 What is the value of the F-statistic? (Round your answer to two decimal places.) Explain your answer. O F is the indicated value because the group means are the same. There is substantial variability between groups. O Fis the indicated value because the group means are different....
PLEASE help ?? A researcher conducted a single sample t-test on results of an experiment with...
PLEASE help ??
A researcher conducted a single sample t-test on results of an experiment with n = 18 participants and the computed t = -2.28. What is the correct conclusion from this experiment if p < 0.05, 2-tails test is used for hypothesis testing? O A. The researcher failed to reject the null hypothesis and concluded that there is a significant treatment effect. O B. The researcher rejected the null hypothesis and concluded that there is a significant treatment...
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A researcher wishes to see if there is a difference in the number of stories in the tall buildings of Chicago, Houston, and New York City. The researcher randomly selects six buildings in each city and records the number of stories in each building. At a = 0.05, can it be concluded that there is a significant difference in the mean number of stories in the tall buildings in each city? Use...
22. The analysis of variance methodology shows the difference between the means of several groups is real (significant) when a. the variance within groups is significantly larger than the variance between (among) groups. b. the variance between (among) groups is significantly larger than the variance within groups. c. the sum squares within groups equals the total sum squares. d. a and b. 23. When using the Chi-square method of analysis to test for the differences among three or more proportions,...
19) ANOVA F test was conducted to test whether the means of three groups are the same against at least one group mean is different. The total number of subjects in three samples were 30. The Fratio (test statistics) was 4.25 a) What is the p-value? b) What is your conclusion at 5% significance level? Are all group means the same?
1. When do we use an independent groups t-test? a. b. c. d. When we are comparing means from one sample that has been measured twice. When we are comparing means from two different samples. When we are comparing a sample mean to a population mean. When we are comparing two population means. 2. Which of the following is true regarding the use of t-tests for true experiments versus quasi-experimental designs? a. b. We use the same t-test whether it...
a researcher records the following data for the each of three
groups
A researcher records the following data for each of three groups. Group C 13 10 13 10 13 13 12 10 What is the value of the F-statistic? (Round your answer to two decimal places.) Explain your answer. O F is the indicated value because the group means are the same. There is substantial variability between groups. O Fis the indicated value because the group means are different....
PLEASE help ??
A researcher conducted a single sample t-test on results of an experiment with n = 18 participants and the computed t = -2.28. What is the correct conclusion from this experiment if p < 0.05, 2-tails test is used for hypothesis testing? O A. The researcher failed to reject the null hypothesis and concluded that there is a significant treatment effect. O B. The researcher rejected the null hypothesis and concluded that there is a significant treatment...
What is the ANOVA F test statistic value?
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