Equations for calculating the error amount in error bars

where:

s = series number

i = point number in series s

m = number of series for point y in chart

n = number of points in each series

= data value of series s and the ith point

= total number of data values in all series

M = arithmetic mean

where:

s = series number

i = point number in series s

m = number of series for point y in chart

n = number of points in each series

y_is = data value of series s and the ith point

n_y = total number of data values in all series