help for task in R programming language

[zemzela]

This is my task. I don't know how to solve it in R studio. Please help me!!!

Simulate:
a) 15 values from N(0,1) distribution
b) 50 values from N(1,5) distribution
c) 30 values from exp distribution with parametar 2
For all these I hade to find mean, standard deviation, deviation. And display graphs (plot,density,hist) It is very important, if you know please help me....

 

[ledzep]

Here you go.

#a) 15 values from N(0,1) distribution

a<-rnorm(15)
mean(a)
sd(a)
hist(a)

#b) 50 values from N(1,5) distribution

b<- rnorm(50, 1, 5)
mean(b)
sd(b)
hist(b)

#c) 30 values from exp distribution with parametar 2

c<- rexp(30, 2)
mean(c)
sd(c)
hist(c)

You might find it useful to read this pages.
http://www.ats.ucla.edu/stat/r/modules/prob_dist.htm
http://127.0.0.1:25834/library/stats/html/Exponential.html

or simply use R help
?rnom
?rexp

 

[zemzela]

how to save my tasks in R script?

 

[Dason]

To save your tasks in an R script you write the R script and then you save it.

\end{snark}

What exactly is giving you trouble? What operating system are you using (windows? OS X? linux?)

 

[zemzela]

Could someone help me, how to solve this task?

We have an arbitrary number, n, X1, X2, ..., Xn are vectors whose data are k random numbers with binomial
distribution with parameters m and p. To write a function that, for any number n will simulate
vectors X1, X2, ..., Xn (previously known for k and m and p), define the vector Y containing
their averages and it will graphically presented. To find a realization for k = 10, m = 12, p = 0.4 and
for different values of n (n = 10, n = 30, n = 50)