A general rule of thumb, is to select a series resistor that gives a 50% volktage with the thermistor at the critical temperature you wish to measure: Ex, for room ambident a 10K NTC would have a 10K 1% or better resistor.
Again, for room temp, my experience suggests that using the
Tracks to within 0.5F at room temp based on 4 separate didital thermometers. Not bad.
Be aware of the self-heating aspect of thermistors! This can break the rule of thumb easily!