show probabilities (-inf+inf, -3dev-3dev and so on....)
조회 수: 2 (최근 30일)
이전 댓글 표시
show probabilities (-inf+inf, -3dev-3dev and so on....)
>> mu = 12.5;
sigma = 3.75;
xs = [0:.01:25];
ys = normpdf(xs, mu, sigma);
clf;
plot(xs, ys);
Follow with the mean and std
댓글 수: 9
James Tursa
2021년 1월 28일
"show probabilities (-inf+inf, -3dev-3dev and so on....)"
I have no idea what is being asked for here. Cumulative probability between the two values? Or ...?
채택된 답변
James Tursa
2021년 1월 28일
편집: James Tursa
2021년 1월 28일
"Integrating pdf" and "probability ... in given level ranges" sounds like the teacher wants you to use the cdf to get the cumulative probability between a range of values. E.g., maybe this is what is being asked:
>> mu = 12.5;
>> sigma = 3.75;
>> pd = makedist('Normal','mu',mu,'sigma',sigma); % Make a Normal pdf
>> cdf(pd,inf) - cdf(pd,-inf) % the integrated probablility between -inf and +inf
ans =
1
>> cdf(pd,mu+3*sigma) - cdf(pd,mu-3*sigma) % the integrated probablity between mu-3sigma and mu+3sigma
ans =
0.9973
댓글 수: 0
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Least Squares에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!