All Questions
7 questions
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Would I use a one-tailed paired-sample t- test on this?
I am doing an assignment that tests whether acceptance and commitment therapy is beneficial for social anxiety disorder.
With an experimental and controlled group.
I just need to know what test I ...
1
vote
2
answers
2k
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Statistical test to compare means when I have two observations per group?
I am trying to interpret the results of my experiment but am not sure what statistical method I should choose. For my experiment, I added 3 types of different fertilizers to soil, with a control, and ...
- 143
1
vote
0
answers
133
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Advantage of using interrupted time series over t-test/ANOVA
I would like to conduct a study to look at the effect COVID-19 pandemic lockdown has on the following:
number of cases at the hospital emergency department (broken down into the different triages and ...
- 227
2
votes
1
answer
597
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Can I use anova on values in decibel (logaritmic)?
I'm doing a project where I'm measuring outdoor sound in different spots. I've repeated the measurement 3 times at every spot on different days (with different weather etc). I measure every spot for ...
- 21
0
votes
0
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49
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Statistical testing for before and after treatment of two independent groups?
I have two sets of continuous variables, weekly sales per customer. One set contains the sales of customers in the control group, and the other set contains the sales of customers in the test group. ...
5
votes
1
answer
688
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Why bother looking at an omnibus ANOVA when I have a priori hypotheses about group differences?
I am examining three independent groups that were measured on a continuous outcome variable. I have a priori belief that the result should be Group 1 < Group 2 < Group 3. I've been told to do an ...
14
votes
3
answers
67k
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Prove F test is equal to T test squared
I need to show that F test is equal to T test squared, when the T test is for 2 independent groups and assuming variances are equal.
I know that $F=\frac{MSB}{MSW}=\frac{SSB/k-1}{SSW/N-K}$
and I know ...
- 531