Chi-square distribution plot

4 次查看（过去 30 天）
Kash022
Kash022 2017-7-3
回答： dpb 2017-7-3
Hi All,
I want to plot the chi square distribution which I have computed. I have the below code which returns me the parameters but am unable to plot the distribution.
[h,p,st]= chi2gof(Id,'NBins',nBins,'Alpha',0.05)
h =
0
p =
0.2530
st =
chi2stat: 129.9011
df: 120
edges: [1x124 double]
O: [1x123 double]
E: [1x123 double]
Id is 1x2000 vector. nBins for me ~278. Please let me know how to plot the distribution. Thanks a lot!!

请先登录，再回答此问题。

回答（1 个）

dpb
dpb 2017-7-3
Because chi2gof returns bin edges, need to convert to centers --
x=filter([0.5 0.5],1,st.edges); x=x(2:end); % average successive edges for centers
bar(x,[st.O;st.E]','grouped') % put the two groups together for bar
legend('Observed','Expected') % tell who's who...

类别

在 Help Center 和 File Exchange 中查找有关 Probability Distributions and Hypothesis Tests 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by