mean

Hi all, i have a very simple question, because i am not good at statistics but i need that :) I have two signals, one is lets say 'x' another is 'time', so its a time serie. I need to find the upper and lower values of my signals according to confidence interval and then show them on a graph...

Alright, I have been working on my statistics assignment since Monday and I only have two questions left, dealing with the probability of a sampling error. Unfortunately, I cannot find anything in my notes and only a brief example in my textbook that does not explain the concepts behind the...

Hi there, I hope you can help me with the following question. I measured the power input and output of a storage and retrieval vehicle with 1,000 single measuring points. I repeated the measurement five times with the same measure method and same time steps. The result is five measurement series...

What’s the mathematical meaning of a significant difference between mean scores? What should we expect? What we are allowed to say about our two groups? For example, if I have done a survey and I have a significant difference between males and females in intelligence. After this survey what I am...