Original post by emx_eco
Not affected:
PMCC
Affected:
Variance
Standard deviation
Mean
(Median- also I don't think questions usually come up about coding the median)
In the equation y = a + bx, a and b are affected by coding
PMCC
Affected:
Variance
Standard deviation
Mean
(Median- also I don't think questions usually come up about coding the median)
In the equation y = a + bx, a and b are affected by coding
Agreed with one clarification, standard deviation(any measure of spread) is only affected when you multiply or divide the observed data values when coding. If you just add or subtract a number from the observed values than its not affected.
Posted from TSR Mobile
Original post by gdunne42
Agreed with one clarification, standard deviation(any measure of spread) is only affected when you multiply or divide the observed data values when coding. If you just add or subtract a number from the observed values than its not affected.
Posted from TSR Mobile
Posted from TSR Mobile
oh yeah, true. thanks
Original post by gdunne42
Agreed with one clarification, standard deviation(any measure of spread) is only affected when you multiply or divide the observed data values when coding. If you just add or subtract a number from the observed values than its not affected.
Posted from TSR Mobile
Posted from TSR Mobile
Well a few clarifications actually.
As you say sd is only affected by multiplicative coding not by additive coding. However, this also applies to variance.as well as the b in y=a+bx
Thanks so much!
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