Mean & Standard error

Related BrainMass Solutions

• Estimated Value & Standard Error

  In other words, the standard error tells us how accurate the sample mean is as compared to the population mean. The smaller the standard error the closer the sample mean to the population mean.

• Explaining the difference between standard deviation and standard error

  Standard error for the sample mean=15/sqrt(25)=3 The standard error provides a measure of the standard distance between a sample mean and population mean In this case, the estimated standard error is _3__points.

• Calculations for Standard Error of the Mean

  77972 Calculations for Standard Error of the Mean The standard error of the mean for a sample of 100 is 30.

• Standard Error of the Mean and Standard Error of the Difference

  The standard error of the mean is the margin or error by which the mean (average) of a number of samples taken from the same population. This error may cause the mean to be slightly off from its actual value.

• Standard Error of the Mean vs. Standard Deviation

  289681 Standard Error of the Mean vs.

• Standard Error of Mean

  The standard error of the mean is 0.12.

• Population Shape and Mean

  What happens to the standard error as the sample size increases? Explain! Standard error of the mean is the standard deviation of the sample mean estimate of a population mean.

• Confidence interval for mean

  a) Determine the standard error of the mean, Standard error of mean = =27/9 =3 b) With a 0.95 probability, what can be said about the margin of error Margin of error = = 1.96*3=5.88 c) What is the 95% confidence interval of the population mean

• A confidence interval of the mean

  standard error of the mean = standard deviation / √N = 4/√100 = 4/10 = .4 STEP 3 Compute the margin of error by multiplying the standard error of the mean by 1.96, the value of z for a 95% confidence interval

• Sample of Monthly Incomes: Standard Error of the Mean

  What is the standard error of the mean income per month (in $'s) for all workers in the company? The standard error of the mean is found by dividing the sample standard deviation by the square root of the sample size.