Add a distribution fit in a histogram

Hi,

This is my script and i would like to add a distribution fit along the bars (see attachment). I assumed using the histfit() function, but i am not sure how can i do it....

% Load yA
% Load yB
% Load yC
% comment out below 3 lines and uncomment your original data loads above
yA = randn(1000,1)*7+15;
yB = randn(1000,1)*3+7;
yC = randn(1000,1)*4+30;
% specify number of bins and edges of those bins; this example evenly spaces bins
NumBins = 25;
BinEdges = linspace(0,50,25);
% use histcounts and specify your bins
cntA = histcounts(yA,'BinEdges',BinEdges);
cntB = histcounts(yB,'BinEdges',BinEdges);
cntC = histcounts(yC,'BinEdges',BinEdges);
% plot
figure(1); cla; hold on;
% convert bin edges into bin centers
b = BinEdges(1:end-1)+diff(BinEdges)/2
% use bar
bar(b,[cntA',cntB',cntC'],'stacked')

[Navya Seelam]

Which data are you exactly trying to fit and what parameters are you trying to obtain by fitting the data?