I am so grateful for finding your videos, you explain the concepts instead of doing it directly, and concept understanding is so important, thank you sir🙏
sir I have one question. Is y..(bar)=u(mu)=observations mean ? It means our estimated mean is = our observations mean? And same thing happened to alfha . But before estimating this we already knew this value of alpha and mu.
No boss Your absolutely correct in doubt But practically these two means are different. I give you an example Average marks in English of one university is not known, then it is mu. If we have taken some sample of 100 students( taken from different colleges) and it's average is 52 say then it is y bar, sample average and it is used to estimate population mean mu. Do you understand??
