Equivalent frequency/occurrence from two frequencies
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How to generate a distribution with a given mean, variance, skew and kurtosis in MATLAB?
There are many questions like this on stackoverflow but they are either talking about Python or R. How can I do this thing in MATLAB?
There is a function
normpdf(x,mu,sigma)
in MATLAB which generates distribution with desiredmu
andsigma
.Equivalently, Is there any way by which I can add skewness and kurtosis to distribution generated by
normpdf
function? 
Should samples from np.random.normal sum to zero?
I am working on the motion model of a robot. In every time step, the robot's motion is measured, then I sample the normal distribution with the measurement as the mean and a small sigma value for covariance in order to simulate noise. This noisy motion is then added to the robot's previous state estimate.
But when I keep the robot still, these noisy measurements seem to accumulate and the robot "thinks it's moving."
Shouldn't these random samples not accumulate, but sum to zero?
In other words, would you expect the following to be true:
0 ~ np.sum([np.random.normal(0, 0.1) for _ in range(1000)])
I have tried writing out the above in an explicit loop and seeding the random number generator with a different number before taking every sample, but the sums still deviate far from zero.
Is this simply a limitation of random number generators, or am I misunderstanding the fact(?) that many samples from the normal distribution should sum to zero?

Quantile egual to math expectation
I am trying to find any distribution corresponding to following:
E(X) = x_5, where
F(x_5) <= 0,05 ; F(x_5+0) >= 0,05
Is there any distributions having that speciality?
I tried to find the one among exponential dist., lognorm and so on but i didn`t succeed 
Firebase  can't see average time on events tab
I'm using firebase analytics on a unity project and I can see only last 30 minutes data from stream view. However i can't see average times spent on screen_views on events tab. I already tested firebase sdk and checked on debug reports, everything works. And also I can see only last 30 minutes data on Stream View section.
Why firebase doesn't show average time on events tab?

Google Analytics Custom dimension doesnt work
I'm having some troubles with the custom dimension that i set in my file's header. The analytics is linked to my site because i get on the analytics the real time count.
That been said, as you can see in the code there is a JS variable iduser it contains the value of a div that has the current ID of the user connected.
I created the dimension based on Hit so i make some interactions in my page but i don't get the value of userid in my custom reports
I was wondering if some of you can help and tell me where my set up is wrong ?
NOTE: The name of the dimension in my GA is : iduser
Thank you so much in advance
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]function(){ (i[r].q=i[r].q[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','//www.googleanalytics.com/analytics.js','ga'); iduser = $('#userid').text(); ga('create', 'UAxxxxxxxxxxx', 'auto'); ga('set','userid', iduser); ga('send', 'pageview');

Facebook Pixel pageview initialisation on AJAX (SPA)
I have a website, based on Single Page Application (SPA) technology. So, while users navigate through website, the page is not reloaded.
At the time, I initialise Facebook Pixel via GTM on each new page, but document.location doesn't change in that case, so I send 'pageview' with incorrect address and title. I'd like FB Pixel to know correct new page path, but there are no instructions to send a pageview event with manually set parameters, like
ga('send', 'pageview', [page], [fieldsObject]);
Has anyone solved that problem?