Risposto

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...

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...

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Risposto

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...

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...

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Risposto

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...

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...

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Risposto

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...

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...

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Risposto

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...

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...

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Risposto

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...

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...

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Risposto

How can I make heatmap scale fixed?

e.g., h1 = heatmap(); h1.ColorLimits = [0 1000];

How can I make heatmap scale fixed?

e.g., h1 = heatmap(); h1.ColorLimits = [0 1000];

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Risposto

Simple function for obtain a T statistic from sample mean, stdev & hypothetical mean

Here you go: t_observed = (sample_mean - hypothetical_mean) / sample_sd * sqrt(n); n is the number of scores averaged to get t...

Simple function for obtain a T statistic from sample mean, stdev & hypothetical mean

Here you go: t_observed = (sample_mean - hypothetical_mean) / sample_sd * sqrt(n); n is the number of scores averaged to get t...

oltre un anno fa | 0

Risposto

creating standard error of mean for bar graphs in code, can you please correct/modify/help my code?

Hard to say for sure without knowing what the original data were, but that doesn't look right to me. Can you explain how the va...

creating standard error of mean for bar graphs in code, can you please correct/modify/help my code?

Hard to say for sure without knowing what the original data were, but that doesn't look right to me. Can you explain how the va...

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Risposto

Generating correlated data for simulation

One option is to create the second array by adding a random number to each element of the first array. For example sigma = 1; ...

Generating correlated data for simulation

One option is to create the second array by adding a random number to each element of the first array. For example sigma = 1; ...

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Risposto

I want to create a QQ & PP plot using L-Moments to fit the GEV but get this error: unable to perform assignment b/c the left & right sides have a different number of elements

Assign the problematic result to a new variable so that you can see what elements it has, like this: temp_var = psi + alpha*(1...

I want to create a QQ & PP plot using L-Moments to fit the GEV but get this error: unable to perform assignment b/c the left & right sides have a different number of elements

Assign the problematic result to a new variable so that you can see what elements it has, like this: temp_var = psi + alpha*(1...

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Risposto

question on repeated measure GLM model

I don't fully understand the design so I won't attempt to answer questions 2) or 3), but I think this is the answer to 1): If '...

question on repeated measure GLM model

I don't fully understand the design so I won't attempt to answer questions 2) or 3), but I think this is the answer to 1): If '...

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Risposto

How to run the ANCOVA test with categorical covariate in matlab?

It doesn't really make sense to run ANCOVA with a categorical covariate. Instead, think of the categorical covariate as another...

How to run the ANCOVA test with categorical covariate in matlab?

It doesn't really make sense to run ANCOVA with a categorical covariate. Instead, think of the categorical covariate as another...

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Risposto

How can I perform wilcoxon Test with paired samples and vectors of differente sizes?

The Wilcoxon test is for data that come in pairs, so the vectors must be the same size. If you are just missing one score or th...

How can I perform wilcoxon Test with paired samples and vectors of differente sizes?

The Wilcoxon test is for data that come in pairs, so the vectors must be the same size. If you are just missing one score or th...

oltre un anno fa | 0

Risposto

Getting a percentile from a histogram

Usually this is done by linear interpolation within the relevant bin. To stick with your 95th percentile example, suppose you h...

Getting a percentile from a histogram

Usually this is done by linear interpolation within the relevant bin. To stick with your 95th percentile example, suppose you h...

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Risposto

A problem in the usage of multidimensional scaling (cmdscale)

You can't cancel that. With only the distance information in D, the mds function has no way of knowing what is up/down/left/rig...

A problem in the usage of multidimensional scaling (cmdscale)

You can't cancel that. With only the distance information in D, the mds function has no way of knowing what is up/down/left/rig...

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Risposto

How to integrate a lognormal pdf

It's hard to say for sure without seeing your xx and xxx values, but maybe it is just your expectations that are faulty? Certai...

How to integrate a lognormal pdf

It's hard to say for sure without seeing your xx and xxx values, but maybe it is just your expectations that are faulty? Certai...

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Risposto

Find number of factors for factor analyses

My $0.02 worth: I would suggest running facan with nBasis=8 and checking the resulting scree plot (plot of eigenvalue as a func...

Find number of factors for factor analyses

My $0.02 worth: I would suggest running facan with nBasis=8 and checking the resulting scree plot (plot of eigenvalue as a func...

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Risposto

linear mixed-effects model (fitlme) add array variable

I'm pretty sure the predictors have to be single values, so you can't feed in an array as a single unified predictor. You could...

linear mixed-effects model (fitlme) add array variable

I'm pretty sure the predictors have to be single values, so you can't feed in an array as a single unified predictor. You could...

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Risposto

Using pdf to find threshold

I'm not entirely sure what you mean by "threshold", but maybe you are trying to identify the middle 95% of the distribution? If...

Using pdf to find threshold

I'm not entirely sure what you mean by "threshold", but maybe you are trying to identify the middle 95% of the distribution? If...

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Risposto

Anova-n outputs as not full rank. Returns NaN P-value.

The short answer is that you have to collect more data to fix this. Look here: >> crosstab(gX1,gX2,gX3) ans(:,:,1) = 7 ...

Anova-n outputs as not full rank. Returns NaN P-value.

The short answer is that you have to collect more data to fix this. Look here: >> crosstab(gX1,gX2,gX3) ans(:,:,1) = 7 ...

quasi 2 anni fa | 0

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Risposto

problem with the anova calculation

Just change one line to this mdl = fitlm(tbl,'pick~C_t')

problem with the anova calculation

Just change one line to this mdl = fitlm(tbl,'pick~C_t')

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Risposto

Can I find likelihood function of an objective function?

A lot depends on the details of these models, but one way to proceed would be in terms of the error scores. Consider the full mo...

Can I find likelihood function of an objective function?

A lot depends on the details of these models, but one way to proceed would be in terms of the error scores. Consider the full mo...

quasi 2 anni fa | 1

Risposto

ANOVA result No p-value.

The problem is that the full model has 90 parameters and predicts a separate mean for each of the 3*3*10 conditions. But you onl...

ANOVA result No p-value.

The problem is that the full model has 90 parameters and predicts a separate mean for each of the 3*3*10 conditions. But you onl...

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Risposto

I am having trouble with errors in the array used for anova analysis

Looks like g1 should be a numerical vector, not a cell array (i.e., square brackets instead of curly brackets). e.g., g1 = [1,2...

I am having trouble with errors in the array used for anova analysis

Looks like g1 should be a numerical vector, not a cell array (i.e., square brackets instead of curly brackets). e.g., g1 = [1,2...

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Risposto

How to fit lognormal distribution on my data

If the scores are in vector1 and the counts are in vector 2, you could fit like this by the method of moments (should be OK with...

How to fit lognormal distribution on my data

If the scores are in vector1 and the counts are in vector 2, you could fit like this by the method of moments (should be OK with...

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Risposto

How do I display Tiled Layouts properly?

I haven't used tiled layouts yet so this may be way off-base, but something like the following has solved similar scaling proble...

How do I display Tiled Layouts properly?

I haven't used tiled layouts yet so this may be way off-base, but something like the following has solved similar scaling proble...

quasi 2 anni fa | 0

Risposto

How do I calculate the signal to noise ratio of a signal without knowing the noise of the signal?

I'm not sure whether this fits your situation, but one way to estimate the noise is to subtract the average of the epochs from e...

How do I calculate the signal to noise ratio of a signal without knowing the noise of the signal?

I'm not sure whether this fits your situation, but one way to estimate the noise is to subtract the average of the epochs from e...

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Risposto

Poisson PMF using MATLAB

This might get you started... k = 0:17; pmf = poisspdf(k,4); figure; plot(k,pmf,'o-')

Poisson PMF using MATLAB

This might get you started... k = 0:17; pmf = poisspdf(k,4); figure; plot(k,pmf,'o-')

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Risposto

May I ask how I can find 95% confidence interval of skew_FP() from these codes?

LBUB = prctile(skew_FP(),[2.5,97.5]);

May I ask how I can find 95% confidence interval of skew_FP() from these codes?

LBUB = prctile(skew_FP(),[2.5,97.5]);

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