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Jeff Miller


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385 2013 이후 총 참여 횟수

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How do I set a seed to generate different random initial numbers and storing them
Maybe the FileExchange contribution RNGMgr will be helpful.

2일 전 | 0

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How to accurately process an Anderson Darling test?
Looks to me like the same problem as in your previous question. MATLAB's 2-parameter Weibull starts from a minimum of 0, but Mi...

5일 전 | 2

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Where is the coefficient for the reference condition when using 'fitlm' to perform ANOVA with intercept omitted?
Why not just use this? for iGrp=1:5 stderr = std(y(x==iGrp)) / sqrt( sum(x==iGrp) ) end

9일 전 | 0

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How to solve for 3 parameters for a Weibull distribution
Here is what I get using Cupid: Build_Array_Final{1}=[214.42,214.99,215.35,215.98,221.08,222.54,214.78,215,215.32,215.75,217.06...

9일 전 | 0

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How to find the minimum of the function?
fminsearch is a good place to start

9일 전 | 0

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Distribution that works with positive and negative skewness
The skew normal is in Cupid. The last parameter controls the amount and direction of skew. E.g., posSkew = SkewNor(10,1,2); p...

17일 전 | 0

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how can I do a double summation with dependent indices?
Sorry, I am having trouble relating your code to your equation, and I would have no idea how to do this with syms. But maybe go...

23일 전 | 0

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Random samples from combination of poisson distributions
One easy way to generate a random score from a poisson mixture distribution is to randomly select the particular poisson first a...

26일 전 | 0

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How can I calculate the 95% confidence interval for spearman correlation values?
I don't think there are formulas for that but you can estimate it with bootstrapping: mycorr = @(x1,x2) corr(x1,x2,'Type','Spea...

약 1달 전 | 0

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Finding the t values of the Student's t test (t1-α,ν)
critt = tinv(1-alpha,v)

약 1달 전 | 0

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Draw PDF and CDF of random values of distance from a 10X10 matrix
I'm guessing you want the empirical PDF and CDF functions (that will change slightly every time you rerun the code, due to rando...

약 1달 전 | 0

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How to find 2d spearman and kendall correlations using corr2?
corr2 is doing the same computation as corr, except that it allows 2d inputs rather than 1d. So, you can get your Spearman or K...

약 1달 전 | 0

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calculate empirical distribution function and interpolation
You want to use the regress function, something like this: X = [ones(size(temp) temp)]; % temp is a column vector of temperatu...

약 1달 전 | 0

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How to find P value in chi2inv
Not sure what you are asking, but maybe p = chi2cdf(3.7920,df,'upper') where df is the degrees of freedom for your computed ch...

약 1달 전 | 0

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Updating multiple variables randomly with a constraint in a while cycle
You might be able to do what you want with nested while loops, something like this. Pretty tedious though. x = zeros(6,1); st...

약 1달 전 | 0

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How to test for a main effect of the between subjects-variable with fitrm and ranova?
% Define the within-Ss factor and give it a name. The 1 & 2 refer to Awake / Asleep WithinStructure = table([1 2]','VariableNa...

약 1달 전 | 0

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fitgmdist for loop; nested for loop, combine array of different sizes
I don't really follow what you are trying to do, but maybe some of these comments will help a bit: I. Use a cell array to outpu...

약 1달 전 | 1

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How do I fit multiple Gaussians to my data?
From the new graph you've posted, it looks like the values in AbsY are not the type of data expected by fitgmdist, and I suspect...

약 1달 전 | 1

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How to compare appropriateness of fitted Weibull and lognormal models via the likelihood ratio test
Unfortunately the likelihood ratio test cannot be used this way. It is only for comparing nested models (i.e., one model has to...

약 1달 전 | 0

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how can i check the geometric distribution
Look at the Wikipedia page on this distribution and it will tell you how to estimate the parameter from your observations (it de...

약 1달 전 | 1

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Use 'trandn' function to draw random numbers from a lognormal distribution
An easy way to get random numbers from a lognormal distribution is to get random numbers from a normal distribution and then exp...

약 1달 전 | 0

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Ploting the result of a fitgmdist (of 1D data)
Say you want to plot the distribution from -15 to 15 in steps of 0.05. This would be the code: z = (-15:0.05:15)'; % Note th...

약 1달 전 | 0

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Ranking Variables by Value
You might find the second output of the sort command useful. E.g. fruitVals = [p_a p_b p_o p_p]; [~, idxOrder] = sort(fruitVa...

약 1달 전 | 0

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help random numbers generator
Good. Here it is as an 'official' answer: pd = makedist('Normal'); t = truncate(pd,-0.5,0.5); r = random(t,10,1);

약 1달 전 | 0

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How to generate random numbers from a scaled beta PDF?
Generate regular beta random numbers and then rescale them. I guess you want to generate randomly from the regular beta(3,3) di...

약 1달 전 | 0

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Why does stepwiselm function output NaN with model interactions?
Multivariate techniques like stepwise regression require more cases (rows) than variables--in practice, you need at least 5-10 t...

약 1달 전 | 0

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Concatenate string to string array in efficient way
strMsgArray = strcat(strStart,strMsgArray,strEnd)

약 2달 전 | 0

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question related to Statistics in matlab
r=poissrnd(9,200,1); will give you 200 random numbers from a poisson distribution with lambda=9. Lots of those numbers will be...

약 2달 전 | 0

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Calculate Convolution 2 pdf random variables
The built-in conv function is for something else, not statistical convolutions. In general, the probability density function of...

약 2달 전 | 0

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How to do an unpaired t-test?
I'm guessing you have some kind of numerical score in each of 120 trials for each of (say) 30 subjects and you want to know if t...

약 2달 전 | 0

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