Which Data Set should you run a post-hoc T-test on? Think about what an ANOVA can...

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Statistics

Which Data Set should you run a post-hoc T-test on? Think aboutwhat an ANOVA can tell us and what can't an ANOVA tell us?

Group of answer choices

Data Set B

Data Set A

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Question 21 pts

Using Data Set A, run the Single Factor ANOVA in Excel, as wedid in class. What p-value did you get?

Data Set A:

SpeechStatisticsChemistry
196935
141412
73217
28930
39535
33168
161537
1826
3910
26
6

Group of answer choices

0.88

0.98

1.98

1.88

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Question 31 pts

Using Data Set B, run the Single Factor ANOVA in Excel, as wedid in class. What p-value did you get?

Data Set B:

MathHistoryOceanography
436631
535440
495853
546442
436451
436438
455655
515546
545440

Group of answer choices

0.48

1.48

0.000048

0.0048

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Question 41 pts

Using Data Set A, what F and Fcritical values did you get?

SpeechStatisticsChemistry
196935
141412
73217
28930
39535
33168
161537
1826
3910
26
6

Group of answer choices

0.013; 3.40

0.210; 4.10

0.00002; 2.21

1.98; 19.28

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Question 51 pts

Using Data Set B, what F and Fcritical values did you get?

MathHistoryOceanography
436631
535440
495853
546442
436451
436438
455655
515546
545440

Group of answer choices

12.12; 4.28

15.50; 3.40

30; 15.30

2.33; 9.38

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Question 61 pts

Below you will find the null and alternative hypothesis for anANOVA:

H0: μ1 = μ2 =μ3
H1: at least one of the means is different.

For Data Set A, based on the p-value and F vs. F critical valueswe found above, do we fail to reject the null hypothesis? Or, do wereject the null hypothesis?

Group of answer choices

Fail to Reject

Reject

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Question 71 pts

Below you will find the null and alternative hypothesis for anANOVA:

H0: μ1 = μ2 =μ3
H1: at least one of the means is different.

For Data Set B, based on the p-value and F vs. F critical valueswe found above, do we fail to reject the null hypothesis? Or, do wereject the null hypothesis?

Group of answer choices

Fail to Reject

Reject

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Question 81 pts

Which Data Set should you run a post-hoc T-test on? Think aboutwhat an ANOVA can tell us and what can't an ANOVA tell us?

Group of answer choices

Data Set B

Data Set A

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Question 91 pts

Tell us, in a short answer, why we run a post-hoc test after anANOVA? What can a T-test tell us? When you run the t-test, do wewant a big or small P (T<=t) two-tail value?Why?

Answer & Explanation Solved by verified expert
4.1 Ratings (498 Votes)
Which Data Set should you run a posthoc Ttest on Think aboutwhat an ANOVA can tell us and what cant an ANOVA tell usAnswer what can ANOVA can tell us it is used to determinewhether there arestatistically significant difference between the means of two ormore independent groups and what cant an ANOVA tell us anova only tell us there is significant difference betweenmeans or not it can not tell which mean is different exactly    See Answer
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