Ten subjects have been tested by the same measure (imagine an intelligence test). But, there is different number of taking part in experiment for each subject (e.g., Subject A: 1 times; Subject B: 7 times; Subject C: 2 times; etc.). Is the mean of means the best option for calculating the mean...
Thanks for reply,
So, imagine a task that doing it by using several strategies (or methods) is possible. But all researchers expect that all individuals will use one identical and definite strategy for doing it. In my experiment, subjects utilized other strategies as well as the main expected...
Six subjects took part in one experiment. They were supposed to use one method for doing their task but other methods have also been utilized. Which statistical test should I use to show that all subjects used the same method (or not)? Please if it is possible introduce a tutorial.
An ANCOVA has been utilized for comparing the performance of three groups in a psychological test. There are 19, 19, and 15 subjects in each group. Some of the P value are like 0.092. Is it a good idea to take them into consideration and report a marginally significant in manuscript?
The answer was here:
"A transformation is required for risk ratios to be approximately normal"
and both of those formula are correct and in fact they are...
When there are two independent groups and proportion ratio (PR) is:
PR = p1 / p2
How I should compute the standard error of PR? Should I use the logarithms of the proportion ratios? If yes, I found two different formula for it, which one is correct?
SE = (1/p1 + 1/p2 - 1/n1 - 1/n2) ^1/2...
How can I perform a Cochran–Armitage test in R? I know some primary information about it, but I'm looking for more examples.
This is my table:
There are 16 previous studies and these are the results:
1. The cats’ performance was better than dogs: 7 studies.
2. There was no significant difference: 9 studies.
3. The dogs’ performance was better than cats: 0 study
Which statistical test is appropriate for analyzing this data? (If you...
What’s the mathematical meaning of a significant difference between mean scores? What should we expect? What we are allowed to say about our two groups? For example, if I have done a survey and I have a significant difference between males and females in intelligence. After this survey what I am...