How Do You Calculate Uncertainty in Amplitude Readings from a Sound Sensor?

[MrMeltedChees]

I used a sound sensor in my experiment and hooked it up to the computer and used it to plot a graph of amplitude against time. I then too readings straight off the graph. How would I go by giving a value for the uncertainty in the amplitude?

 

[Vorde]

If the uncertainty is solely reliant off of the sound sensor, the value you got would be accurate to +1/-1 in the last digit. So if your sensor gave you a value of 1.3, the uncertainty would be 1.3 +/-.1.