#### For business forecasting

Our confidence interval calculator differs from others

in that the result depends on the amount of data entered.

The average general formula is only used for

a very large number of data tests.

* Result depends on the number sample

The default probability is 95%

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.