"saisat" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hello all, > > > I have a large quantity of data for which i have the mean and Standard > deviation. But in this data, quite of few of the values are really > inaccurate. How can I get the "accurate" mean of the above sample > data. > > For example if I have 100, 100, 100, 500 as the sample data > the mean is 200. But in my case 500 is obviously an erroneous value > for the data. The actual mean should be close to 100. How can I get > this value bearing in mind that my sample in quite large (in millions) > and i need to somehow "remove" these inaccuracies > > Thanks > Sat
But how do you know that a value of 500 is incorrect, and how do you know that the mean should be close to 100? How precisely do you need to estimate the mean? Duncan . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
