All Questions
6
questions
2
votes
0
answers
38
views
Is there a parametric trend test with provable power?
I have $N$ samples $x_1,\dots,x_N$ and I want to test following hypotheses.
The null hypothesis is that $x_1,\dots,x_N$ i.i.d. sample from a normal poplulation $N(\mu_1,\sigma^2)$, with unknown mean $\...
- 593
2
votes
0
answers
57
views
How can I implement this bivariate sign test in R?
Suppose $(X_1,Y_1),(X_2,Y_2),\ldots,(X_n,Y_n)$ are i.i.d with a common continuous bivariate distribution function $F$. I wish to test $H_0:(\mu_1,\mu_2)=(0,0)$ against $H_1: (\mu_1,\mu_2)\ne (0,0)$, ...
- 11.5k
9
votes
1
answer
12k
views
How is pairwise PERMANOVA/adonis a valid non-parametric approach for pairwise comparisons
Assume that we have taken independent random samples of several individuals from 5 locations that represent 5 populations. The design is fairly unbalanced: the number of individuals sampled from each ...
- 351
3
votes
1
answer
2k
views
Test to show one distribution is bigger than another
Here is a MWE of my problem:
I measure the size, $S$, of 10 red apples and 32 green apples.
$\bar S_\mathrm{red} = 8 \pm 1\,\mathrm{cm}$ and $\bar S_\mathrm{green} = 4 \pm 2\,\mathrm{cm}$.
I want ...
- 55
0
votes
0
answers
15
views
Comparing effect of two variables
I have two IV’s (A) and (B) and a DV (X). The hypothesis is: (A) has a higher propensity to result in (X) than (B).
X is Dichotomous.
A and B are single 5-point Likert-scale questions.
I’m ...
- 1
2
votes
1
answer
297
views
What does the symmetry requirement for the Conover rank squared tests entail?
What does the symmetry requirement for the Conover rank squared tests entail? In that link it is stated that the Conover test assumes the data is symmetric about a common median. Is this symmetry of ...
- 13.2k