how to plot a normal distribution and calculate mean and standard deviation ?

I have a data which is (4259*1 cell)

i want to get its normal distribution and to calculate its mean and standard deviation to get a graph like this:

I try :

 [ndata text alldata] = xlsread('final53.xlsx','device age manuf');
[R,C]=size(alldata);
colsize=max(C);
data=alldata(:,14);
[mean,st]=normfit(data);

but i get an error:

 Undefined function or method 'times' for input
arguments of type 'cell'.
Error in ==> normfit at 102
sumx = sum(freq.*x);
Error in ==> plotdata at 42
[mean,st]=normfit(data);

how to plot the normal distribution and calculate mean and standard deviation?

Answer 1

[Star Strider]

One option is to use the cell2mat function to define ‘data’ as a double array.

Answer 2

[Image Analyst]

Try using ndata instead of alldata.

[Amr Hashem]

a good notice... it works, thanks