A random sample of 13 observations from a population yielded x=488.8 and = 18950.2. Estimate and I can't find this in my notes, I think x = 488.8 would be the sum of the sample, not sure where to go from there. Thank you
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Originally Posted by rba_mandy A random sample of 13 observations from a population yielded x=488.8 and = 18950.2. Estimate and I can't find this in my notes, I think x = 488.8 would be the sum of the sample, not sure where to go from there. Thank you . . Substitute your data and do the calculations.
Originally Posted by mr fantastic . . Substitute your data and do the calculations. Ok, but I don't understand these formulas. What is the n over i? Is the first formula for and the second for ? Could you possibly give me a head start or an example maybe? Thanks for your help.
Originally Posted by rba_mandy Ok, but I don't understand these formulas. What is the n over i? Is the first formula for and the second for ? Could you possibly give me a head start or an example maybe? Thanks for your help. is the sum of all the data. is the sum of the squares of all the data. is the number of data points. You have been given the value of these three things. Substitute them into the formulae I gave you.
Ok, I think I understand. Thank you for the help.
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