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Chris


Last seen: 2 years 前 |  自 2021 起处于活动状态

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统计学

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How can I change all numbers in matrix to 1? except for 0
How can I change all numbers in matrix to 1? except for 0 I want to make the matrix which has 1(all the numbers) or 0.

2 years 前 | 3 个回答 | 0

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I used "[b,dev.stats]=glmfit(b1,a1,'binomial')" function, and it has an error..
I used "[b,dev.stats]=glmfit(b1,a1,'binomial')" function, and it has an error.. a1 and b1 are 131472*1 matrix. When I used "gl...

2 years 前 | 1 个回答 | 0

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When I used "gamfit(data)", it says "X must be non-negative."
I have 45000*1 data table and all of values are non negative. When I used "gamfit(data)", it says "X must be non-negative." Wou...

2 years 前 | 1 个回答 | 0

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I used "autocorr"function and got this graph. How can I interpret this grpah meaning?

2 years 前 | 1 个回答 | 0

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提问


How can I plot Kendall tau trend by using MATLAB code?
I have 1*20 matrix and want to plot Kendall tau trend. May I ask how to do it by using codes?

2 years 前 | 1 个回答 | 0

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May I ask how I can find 95% confidence interval of skew_FP() from these codes?
rng(1000) nn=143; for n=1:1000; r=rand(nn,1); ss(n)=std(r); m(n)=mean(r); med(n)=median(r); nu(n)=numel(r) skew_FP(n) = ...

2 years 前 | 1 个回答 | 0

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I want to test whether the skewness of the samples(from A:900*1 matrix) converge to 0 or not by using Montecarlo simulation.
Hi, I want to test whether the skewness of the samples(from A:900*1 matrix) converge to 0 or not by using Montecarlo simulation...

2 years 前 | 1 个回答 | 0

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I want to determine if the data(tmin) are Gaussian distributed or not by using Montecarlo simulation with skewness.
nn=143; for n=1:1000; load('ERA_Livneh_Birmingham.mat') ss(n)=std(tmin); m(n)=mean(tmin); med(n)=median(tmin); nu(n)=numel...

2 years 前 | 1 个回答 | 0

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I want to do bootstrap analysis by using 20*1 matrix.
I want to draw 500 samples from the 20*1 matrix (20 pairs of observations). In this case, what codes do I have to use?

2 years 前 | 2 个回答 | 0

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Can I use "chi2gof" code in this case?
The forecasts of event A: 500 and the observations of event A: 400. I want to use chi-square test. In this case, can I use "chi...

2 years 前 | 1 个回答 | 0

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May I ask how I can get the 95% confidence intervals for the true mean data?
"A" is data with 700*1 matrix. I want to have the 95% confidence intervals for the true mean of A. What codes do I have to use...

2 years 前 | 0 个回答 | 0

0

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What codes do I have to use to determine if the data are Gaussian distributed?
What codes do I have to use to determine if the data are Gaussian distributed?

2 years 前 | 1 个回答 | 0

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May I ask how to plot Poisson distribution plot?
lamda = 47/42; year_span = 1, 2, ....., 9; x = 0; p = (exp(-lamda*year_span))*((lamda*year_span)^x)/(factorial(x)); 1-p T...

2 years 前 | 1 个回答 | 0

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Would you please tell me what do I have to fix in Binomial distribution code?
for n = 2:30 for x=1:n; p(x) = (factorial(n)/(factorial(x)* factorial(n-x)))*((10/230)^x)*(1-(10/230).^(n-x)); ...

2 years 前 | 1 个回答 | 0

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Question about "gamcdf" code
The scale parameter is 2 and shape parameter is 1. I want to use "gamcdf" code for 75th percentile value, then do I have to use ...

2 years 前 | 1 个回答 | 0

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May I ask what MATLAB code for expected value is by fitting a Poisson distribution?
A = [1, 2, 3, 4, ..., 100] In this case, I want to fit a Possion distribution and get the expected value. Would you please tel...

2 years 前 | 1 个回答 | 0

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I have troubles in for loop with 2 variables.
for n = 2:30 for x=1:n; p(x) = (factorial(n)./(factorial(x).* factorial(n-x))).*((10/230).^x).*(1-(10/230).^(n-x))...

2 years 前 | 1 个回答 | 0

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What is the code of Gamma distribution with method of moments?
What is the code of Gamma distribution with method of moments?

2 years 前 | 1 个回答 | 0

1

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How can I make a Monte Carlo estimate for skewness (by using a sample size of n=500 with 500 repetitions?)
May I ask how can I make a Monte Carlo estimate for skewness (by using a sample size of n=500 with 500 repetitions?) Also, how ...

2 years 前 | 1 个回答 | 0

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Would you tell me the code for Fisher Pearson skewness?
Would you tell me the code for Fisher Pearson skewness? How can I get the skewness with Fisher Pearson formula..?

2 years 前 | 2 个回答 | 0

2

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How can I plot "Monte Carlo" with 3000 random numbers?
How can I plot "Monte Carlo" with 3000 random numbers?

2 years 前 | 0 个回答 | 0

0

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what formula do I have to put for calculating by using MATLAB?
N = 500, S = 110. Then what formula do I have to put for calculating by using MATLAB?

2 years 前 | 1 个回答 | 0

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How can I compare with daily precipitation data from the day before?
I have 30 years of daily precipitation data. I want to compare those data with the data from the day before. A is 10950*1 matr...

2 years 前 | 1 个回答 | 0

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How can I find numbers>30 in 810*1 matrix?
How can I find numbers>30 in 810*1 matrix?

2 years 前 | 1 个回答 | 0

1

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How can I extract specific data?
There are 7300*1 matrix of daily temperatures. Would you please tell me how can I get summer temperatures (June to August)?

2 years 前 | 1 个回答 | 0

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How can I select or extract rows?
I have a 9855 * 1 table indicating months. Such as 1 1 1 2 2 2 3 3 3 . . 12 12 12 1 1 1 2 2 2 ... How ...

2 years 前 | 1 个回答 | 0

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How to extract the specific rows from the table?
There are total of 30 years precipitation data (Januaray to December). There are only one column with January to December. How...

2 years 前 | 0 个回答 | 0

0

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How can I get precipitation data only for summer (June~August for 30 years)?
I have a daily precipitation data for 30 years. Then how can I get precipitation only for summer (June~August for 30 years)?

2 years 前 | 1 个回答 | 0

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How can I convert x-axis (cycle or day) to x-axis (frequency) ?
How can I convert x-axis (cycle or day) to x-axis (frequency) ? If it is possible, could you tell me the method??

3 years 前 | 1 个回答 | 0

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I want to draw dotted line arrow by using quiver. What do I have to do?
I want to draw dotted line arrow by using quiver. What do I have to do?

3 years 前 | 1 个回答 | 0

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