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Definition can be found in the ODF v1.2 specification, Part 1, under *20.13 chart:error-category*:

The

`chart:error-category`

attribute is used to determine which function is used to calculate error indicators at data points. By default, no error indicators are shown. The defined values for the`chart:error-category`

attribute are:

`cell-range`

: Use values from cell ranges for positive and negative error indicators. The`chart:error-lower-range`

and`chart:error-upper-range`

attributes determine the cell ranges which contain the values to be used for negative and positive error indicators.

`constant`

: Use fixed absolute values for both directions: positive and negative The absolute value for a positive direction is given with`chart:error-upper-limit`

attribute. The absolute value for a negative direction is given with`chart:error-lower-limit`

attribute.

`error-margin`

: Use a fixed percentage of the largest value – this is called error-margin. The percentage value is given within`chart:error-margin`

attribute.

`none`

: No error indicators are shown.

`percentage`

: Use a fixed percentage of each value The percentage value is given within`chart:error-percentage`

attribute.

`standard-deviation`

: Standard deviation of the values of a series assuming an equal distribution.

`standard-error`

: Standard error (standard deviation of the mean) of the values of a series.

`variance`

: Variance of the values of a series assuming an equal distribution.This attribute is evaluated for chart styles that are applied to

`<chart:error-indicator>`

,`<chart:series>`

or`<chart:plot-area>`

elements.

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