Num values as (i, valueᵢ) samples → {mean, slope}. Writing mean shifts all values; writing slope (least-squares) tilts them about the mean. Each preserves the other's reading.
mean
slope
Num values as (i, valueᵢ) samples → {mean, slope}. Writing
meanshifts all values; writingslope(least-squares) tilts them about the mean. Each preserves the other's reading.