Basic arithmetic, for a start.
It would help to know the standard error of the difference between what elements.
The sample standard error.
Standard error is random error, represented by a standard deviation. Sampling error is systematic error, represented by a bias in the mean.
The standard error increases.
the purpose and function of standard error of mean
The standard error of the underlying distribution, the method of selecting the sample from which the mean is derived, the size of the sample.
I do not know 825 but RSE The relative standard error (RSE) is a measure of the reliability of a survey statistic. The smaller the relative standard error, the more precise the estimate.
Your question is asking for a number to be divided by itself. Can you clarify your problem.
yes
Standard error of the mean (SEM) and standard deviation of the mean is the same thing. However, standard deviation is not the same as the SEM. To obtain SEM from the standard deviation, divide the standard deviation by the square root of the sample size.
Standard error of the sample mean is calculated dividing the the sample estimate of population standard deviation ("sample standard deviation") by the square root of sample size.
Mean: 26.33 Median: 29.5 Mode: 10, 35 Standard Deviation: 14.1515 Standard Error: 5.7773