Concepts of data analysis?

Can someone please discuss the concepts relating to data analysis. Any help whatsoever would be great, and thank you to anyone that can help; and also a big thanks to all the people here on ehelp.com

Thank you for your great help, I appreciate it.

Data analysis is used to extract information, most often from analog or digital data. For use in a computer, analog data can be sampled at fixed intervals and converted to digital.

Some concepts include simple averages, weighted averages, frequency, peak to peak measurement, linear regression and many more. Analysis starts with a question, looks at the available data and devises a methodology to process the data in a way that will answer the question as accurately as possible. The computer steps through the data and applies that algorithm to each step then computes the result. The output can be a list of numbers, graphs or graphics that explain the findings.