STATISTICAL FUNCTIONS

By pressing the button, the statistical window is enabled.

Statistical window allows to store groups of number and execute some common statistical operators.

Into the statistical box, there are four buttons with these functions:

[RET]

It moves the focus back to the calculator.

[LOAD]

It loads the selected number into the output display of the calculator.

[CD]

It deletes the selected number from the list.

[CAD]

It deletes all numbers currently stored into the list.

While the statistical window is shown, four additional buttons are enabled:

It calculates the arithmetic average of the numbers stored into the list.

It calculates the sum of all numbers stored into the list.

It calculates the population standard deviations of the numbers stored into the list.

It inserts the number shown into the output display into the list.

Note: when the statistical box is closed, its content is lost.