In confidence I The personal text messages I Innovative developments

For business forecasting

* Result depends on the number sample
The default probability is 95%


Select percentage:

How Many in Sample:

Sample Mean:

Sample standard Deviation:


Number of samples:
Standard Deviation:
Mean:


95 % confidence interval

± 0

Interval 0 to 0


Fisher, R.A. (1956) Statistical Methods and Scientific Inference. Oliver and Boyd, Edinburgh.
Freund, J.E. (1962) Mathematical Statistics Prentice Hall, Englewood Cliffs, NJ.
Venttsel, E.S.(1964) Probability theory, Moscow.
Keeping, E.S. (1962) Introduction to Statistical Inference. D. Van Nostrand, Princeton, NJ.
Gumbel, E.J. (1958) Statistics of extremes.

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