Let's look at the original definition: PROVE IT! N = ËW(m N! Σ m-0 m!(N -m) If there is no n1 factor then it will be binomial as before.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Back on the random walk, the probability in the total step N makes n1 a step to the right
(i.e. N- n1 = n2 to the left) are:
N!
qN-m
m!(N – m)!"
W (m) ) =-
If normalized:
N
EW(m) =1
then
N!
Σ
m-0"!(N- m)!
= (p+q}N
= ËW(m m = £
"=0
N!
n=0 !(N-m)
=1N =1
q =1-p
because
Which of course could have been expected before.
Now let's see what the average number of 1n steps to the right means?
Let's look at the original definition:
PROVE IT!
N!
T = EW(m \m -
m -0m!(N – n)!
If there is no n1 factor then it will be binomial as before.
Transcribed Image Text:Back on the random walk, the probability in the total step N makes n1 a step to the right (i.e. N- n1 = n2 to the left) are: N! qN-m m!(N – m)!" W (m) ) =- If normalized: N EW(m) =1 then N! Σ m-0"!(N- m)! = (p+q}N = ËW(m m = £ "=0 N! n=0 !(N-m) =1N =1 q =1-p because Which of course could have been expected before. Now let's see what the average number of 1n steps to the right means? Let's look at the original definition: PROVE IT! N! T = EW(m \m - m -0m!(N – n)! If there is no n1 factor then it will be binomial as before.
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