f**y
发帖数: 368 | 1 linear fit a+bx through several points (x,y), each y point has an error bar
fitting result give a, b, and the following para:
YBAND
1 standard deviation error estimate for each point.
YERROR
standard error between YFIT and Y.
YFIT
vector of calculated Y values. These values have an error of + or - YBAND.
CHISQ
value of the unreduced chi-square goodness-of-fit statistic
SIGMA
1-sigma uncertainty estimates for the returned parameters
now suppose a+bx line intersect with X asix at a point S with (s |
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