2. What does it tell?Measure the approximate standard deviation of statistical sample population
3. It's characteristicIt indicates how accurate the mean of any sample likely to be compared with population mean.
4. InterpretationThe more data included in calculation of mean, SE tend to be smaller
5. The EquationSmaller SE exhibits higher representation of the sample to the population.
6. Term
Standard error estimates the likely accuracy of a number based on the sample size
Standard error of the mean, or SEM, indicates the size of the likely discrepancy compared to that of the larger population
https://www.investopedia.com/terms/s/standard-error.asp