Testing for an exponential relationship?!!Watch
I mean the situation where they either give u values or a graph and you have to test if the relationship is exponential.
Can somebody pleaseeeeeeee explain to me how to do it, ill give rep as a bribe because i have such a mental block !!!
Please make it not too maths-y lol, im mathematically challenged, i just need to know the basic way to calculate this :P
Thanks in advance!!
test A = k e^B which is an exponential relationship, where k is a constant
lnA = lnk + B (learn your exponential laws!)
Plot lnA against B - if straight line, then exponential relationship is established.
ok so say you had to work out the realtionship without drawing a graph, just using values FROM an already plotted graph.. does it work the same way?
say you have your data in some kind of table. if the relationship is exponential, then dividing each entry in the F(x) (dependent variable) column by its immediate neighbour above or below should give pretty close to the same value. Just make sure you're consistent with which neighbour you choose (above or below).
Hope this helps someone, somewhere, somewhen.