hello, I'm doing coursework on using a thermistor as a temperature sensor. For my preliminary readings I had to choose between 3 different thermistors. Is it true that, for example, a 22k thermistor has a resistance of 22kohms at 25 degrees? (my tutor told me this) likewise, a 15k thermistor has a resistance of 15kohms at 25 degrees? My results don't show this at all; they're completely off. (eg. 6kohm resistance at 25 degrees for a 10 kohm resistor..) I've looked at some thermistor datasheets but i can't make head nor tail of them. could anyone give me a range of the types of resistances I should be getting, please? Also, anyone advice on how I should linearize my results? I understand that the resistance-temperature graph is non-linear. do I: Record the voltage at different resistances (and therefore temperatures) and plot a voltage-temp graph? but this won't be a straight line, am i right? so/do I have to plot a tangent to my curve? i'm just really unsure of what i'm doing, i've heard/read different things. Thanks in advance for any help, it is muchly appreciated.