HP 48G Linear Regression Best Fit Line

[MNH]

(12-11-2021 05:38 PM)Rodger Rosenbaum Wrote:  The result will be the slope and intercept for the line which minimizes the SSE with the deviation from the line in the orthogonal direction.

My results are:

120.175378956
-80799.308982

which looks strange to me, probably because I don't know a lot about statistics. My ΣDAT is

y

29945.480
30002.951
30006.678
30058.926
30114.903
30119.876
30221.977

x

921.773
922.245
982.237
921.687
923.001
983.350
924.059

In the matrix editor I entered the 'x' data in column 1 and the 'y' data in column 2. Is that correct?

The actual survey data is

PT # Northing Easting Elevation Description

248 29945.480 921.773 0.000 PROP_COR
249 30002.951 922.245 0.000 PROP_COR
250 30006.678 982.237 0.000 PROP_COR
251 30058.926 921.687 0.000 PROP_COR
252 30114.903 923.001 0.000 PROP_COR
253 30119.876 983.350 0.000 PROP_COR
254 30221.977 924.059 0.000 PROP_COR

Please see the attached file (thumbnail) to see the relationship of the points. North is straight up.