This command generates a new document showing mean (average) values of Y for all points within a user-specified interval in X. The command also creates error bars with a choice for the error bar amplitudes of:

1. | Mean minus the extreme high and low amplitudes. |

2. | Standard error from the mean. For purposes of this command, standard error is the standard deviation divided by the square root of the number of points within any interval. |

3. | Standard deviation. Standard deviation is defined by |

If the "Group X values within interval" value is set to 0, points are grouped only if the X coordinate is exactly the same. Otherwise input X values are rounded to the nearest interval.

The "Start at X=" entry determines the starting value of X in the output, with all subsequent X values being equal to that start value + some whole number times the interval. "Start at X=" is not used if the interval is set to 0 (no grouping).

Example:

With "High and Low extremes" selected and an interval of 2.0, "Start at X" = 0, this graph:

produces this result:

Page url:
https://www.dplot.com/help/index.htm?average_curve_with_error_bars.htm