Jeff Miller

Last seen: 1 día hace | Con actividad desde 2013

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Inverse of a mixture distribution of two lognormal functions
Unfortunately, your method below won't retrieve the Cr values correctly except in the special case where the two distributions i...

5 días hace | 1

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Using bootstrp for t-values
It depends on whether you want it to be possible that the "one randomly sampled value" is also present within the random sample ...

29 días hace | 0

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Find the two most commonly occurring values in a multimodal distribution of numbers.
It would be more informative to see a histogram of your y values since they aren't related to x per se. If that histogram looks...

alrededor de 2 meses hace | 0

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ANOVA for linear mixed-effects models produces misleading main effects
One common approach in this situation is to rescore x to shift the intercept to a value that you do care about--usually the mean...

2 meses hace | 1

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Alphabet T and L are overlapping in some of the trials in this code for Psychtoolbox. How to resolve this issue ?
I think you have a lot more randomization and complexity than you need. For example, it doesn't matter what order you draw the ...

2 meses hace | 0

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ANOVA for linear mixed-effects models produces misleading main effects
In addition to what @the cyclist said, here is another way to look at it: "I always assumed that the stats for the main effect ...

2 meses hace | 1

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fit a log 'raised cosine' distribution on univariate data in matlab
I think the problem is here: y = lograisedcosinepdf(x,mu,s); Since you are plotting xgrid versus y, I think you want y = logr...

2 meses hace | 0

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Three-way repeated-measures ANOVA with no between-factor
It sounds like you are almost there but this isn't right: "given filtered searches for each factor (e.g., data(:, strcmp(gender,...

3 meses hace | 1

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Non parametric N-way analysis of variance
No, there isn't one. This isn't actually a Matlab limitation, but rather a statistical one, because there simply isn't a clear ...

3 meses hace | 0

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Save a variable during parfor loop
Maybe break up your computations into segments, run the parfor within each segment, and save the results at the of each segment,...

3 meses hace | 1

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Linear regression on data with asymmetric measurement error
If you have separate measures of the lower and upper directional error associated with each X value (either empirical or derived...

5 meses hace | 0

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Compute conditional mean from distribution
Another approach: pd = makedist('Lognormal', 5, 0.5); lb = icdf(pd,0.01); % find scores at 1% and 5% ub = icdf(pd,0.05); td...

5 meses hace | 0

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Error in generalized linear mixed-effects model with poisson distribution.
I haven't used Poisson models myself, but I thought they required the values of the dependent variable to be non-negative intege...

6 meses hace | 0

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F values come out as Infinity using the anovan function
The underlying problem is that the d.f. for error is 0, which is responsible for the 0 MS error. In essence, there are not enou...

6 meses hace | 0

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How to Calculate the Effect Size at p=.05
You can get an answer by computing a confidence interval for the Cohen's d. Specifically, at p=0.05, one end of the confidence ...

6 meses hace | 0

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How to locate 'Cupid-master' path on my system
I think Cupid-master is just a folder name that others have used when they installed the files, and you can just addpath to your...

6 meses hace | 1

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How to extract 3 Weibull parameters obtained using method of moments
parms = weib.ParmValues; % this function reports back the current parameter values of the weib distribution.

6 meses hace | 1

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Compute group statistics when the group definition is an OR of values found in several columns of a table
Maybe reformat the table with stack: T=table([1 1 2 3 3 4]',{'John','Bob','Emma','Emma','Bob','Bob'}', ... {'Emma','','Bob...

7 meses hace | 0

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Writing Matlab Table to File
Try this: str = formattedDisplayText(S); str = erase(str,"<strong>"); str = erase(str,"</strong>"); fprintf(file,"%s",str); ...

7 meses hace | 0

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parfor variable classification issue revisited
Maybe something like this would be helpful, using the wonderful allcomb. idx = allcomb(1:5,1:6,1:7,1:8,1:9); nrows = size(idx,...

8 meses hace | 0

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Create .mat file which appends a variable each time a function is executed
Maybe you can use the function 'matfile' to do what you want. Here is a little example: % This is part of the main program / s...

8 meses hace | 0

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Why are pool workers going inactive while many iterations remain?
What you would like is for any free processor to take up any waiting task (me too), but for some reason that's not how it works....

9 meses hace | 0

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How to generate a Frechet distribution using Methods of Moments?
Here is how you might do it if with Cupid : %% Example for the 2-parameter Frechet distribution (minimum known to be 0) % M...

9 meses hace | 0

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How can I calculate True positive, False positive, True negative and False negative of real and predicted dataset?
First you need to map your 3 values 1-3 onto just two categories: positive and negative. For example, you might decide to call ...

9 meses hace | 0

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Linear Regression with Only Dependent Variables
It sounds like you can get what you want from simply [rho, pval] = corr(matrixA(:,1),matrixB(:,1)) fitlm is for situations wit...

10 meses hace | 1

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How to use chi2gof within CUPID
Yes, that is correct. The successive bin probabilities are the differences of the successive CDF values, and the expected numbe...

10 meses hace | 1

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Goodness-of-Fit for a best-fitting distribution? (by using CUPID)
There are lots of different ways to evaluate the goodness of fit of a given theoretical distribution to a dataset (see, e.g., wi...

10 meses hace | 1

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Fit a statistical distribution to truncated data
If you would like to fit a variety of truncated distributions in addition to the normal, you might find Cupid helpful. For inst...

10 meses hace | 2

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Fit parameter to Weibull distribution
The problem is a bad choice of starting values. You will get much better parameter estimates with params = mle(A,'pdf',customp...

11 meses hace | 0

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Using Psychtoolbox KbCheck() functions, how can I test for a renewed keypress?
One approach is to check timeSecs. This will be very small if the key is continuously held down from the previous trial, but pre...

11 meses hace | 0

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Jeff Miller

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