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Questions tagged [exponential-distribution]

Anything related to the exponential probability distribution, i.e. a continuous probability distribution whose probability density function is a one-sided decreasing exponential function.

Anything related to the exponential probability distribution, i.e. a continuous probability distribution whose probability density function is a one-sided decreasing exponential function:

f(x) = ke-kx    if x >= 0

f(x) = 0          if x < 0

where k is a constant.

See Wikipedia page on the exponential distribution.

Tag usage

Questions on should be about implementation and programming problems, not about the statistical or theoretical properties of the technique. Consider whether your question might be better suited to Cross Validated, the StackExchange site for statistics, machine learning and data analysis.

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Generate on/off signals of random duration SIMULINK

For my SIMULINK model I need to generate a signal that takes the values 1 or 0. To generate it I need to draw a number from a an exponential distribution and use this number as the time the signal stays in 0. Once this time has passed, I have to…
c_david
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R: combination of multivariate normal and exponential distribution

I have a set of 7 parameters with high correlation and I need to be able to extract randomly generated sets. However, my variables do not all follow a multivariate normal distribution. I've plotted the distribution of the parameters below where you…
Jonas Coussement
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Generate 0 entity in a run

Suppose to have an time interval ( from 0 to 3600000 that is one hour in milliseconds). I have to generate entity with average 3 and I utilise an Exponential Distribution. The average is (3600000/3) that is how I wanna sample the distribution. If in…
rubbber
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Can we generate data from two exponential distributions with correlation -1

https://stats.stackexchange.com/questions/66775/attainable-correlations-for-exponential-random-variables With reference to the above link I want to ask if it is impossible to generate two exponential distributions with correlation -1 ?
Mayank Raj
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Estimated lambda exponential distribution

I'm trying to calculate lambda that is the rate of exponential distribution. For example if I have an interval of 5 seconds and I have 4 objects (on average) how is lambda calculated? I need formulas to calculate it. Can anyone help me?
user3806720
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generating random variable having an exponential density function

I would like to generate a random variable having an exponential density function: f(x) = e^x / (e - 1), 0 <= x <= 1 I know I can use a uniform random number generator with using the inversion method for a simple function like (e^-x). But, I am not…
user3037153
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Formulating the exponential equation given a certain pair of points

I have the following pairs of points: (0 , 100) ; (0.81 , 41) ; (1.38 , 20) ; (1.75 , 9) ; (2 , 4) How can I determine the equation of the curve passing through this points? Thanks very much! UPDATE What I'm trying to achieve is to get the function…
Bruno Morgado
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Two exponential distributions

I am trying to simulate two exponential distributions. For example two CPUs processing jobs e.g. one having average service time 10 min (lambda = 0.1) and another one 20 min (lambda = 0.05) and they work independently. Both of them are busy when a…
user3138594
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How to create a multi column table of data from the exponential distribution

I need to create a multi column table of customer arrival time, customer wait time, service time, and customer leave time. Service time is the time it takes for the cashier to help the customer. Arrival time and service time are provided by a…
Ben
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Exponential/Poisson distribution

Tom enters the post office where 5 people are being served, each by a different sales clerk. He will be called up as soon as any one of the 5 people currently being attended to are finished. The service time for each individual by each cleark has an…
Christopher
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Generate a exponential distribution for a set of data using boost c++

How to generate a exponential distribution for a set of data using boost c++ . I have a vector containing float variables named vararr and using Boost c++ and I want to fit it Exponential distribution and getting respective rate parameter(lambda)…
Kumar Abhinav
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Exponential distribution parameters

I need to set parameters in an exponential distribution. I know that every 5 seconds I can produce 4 object in average. What is the lambda value of exponential distribution?
user3697187
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Generate a random variable with an exponential distribution

In Matlab using the rand routine, how should I write the code to generate 500 samples from an exponential distribution, whose pdf is: (1/mu)*exp(-x/mu); x>=0
user3115854
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