-
If you look at the first 4 rows in the screenshot. Heart rate 99 - confidence 40, then confidence is 0 for the next 8 readings but most were close to 100 bpm.
HughB-
Did some statistics. We were both right sort of:
While the standard deviation gets much bigger with lower confidence and also the mean error gets bigger, it is still not as totally off as I would have expected:See scatter plot of dHR over confidence (dHR is differnce between bangle reading and a polar H10) and the standard deviation over confidence in the two attached pictures.
This recording is from walking on pavement and driving car as a passanger. For an other recording with walking on rough terrain, the result is pretty much the same, just higher amount of data with low confidence.
Mi
My impression is exactly opposite right now. Should have a real statistic by tomoorow. But it seems HR is really good when confidence is high (>90) and way off with low confidence which would make any averages useless. I got this impression from looking on BT HRM which show all relevant values.