What affects oscilloscope accuracy in RC circuit measurements?

[gimini75]

Hi

I have done my experiment by using an Oscilloscope, (10 k ohm) resistor and 220 nF capacitor and a probe to find the the V out and then finding Gain and phase shift, my question is what's going to affect the accuracy of the data being received from the experiment results?

 

[dlgoff]

Have you checked the specs of the oscilloscope? There's probably inaccuracys there.
Does the scope have a scale which you read? The eye is usually good to half a division.