Group+8+Marisa+and+Roberto

Significant figures in measurement are the numbers that you copy down as the measurement during testing and observations.The more digits there are after the decimal point in the significant figure, the closer the figure is to the true or accepted value Accuracy is how well you can measure and precision is how close you can measure the measurement to the nearest number. This helps us report back with small error percentage. Our percent error for the measurement lab using the 100 ml graduated cylinder was 2.3% which is moderately low but the closer you are to zero the more accurate your result will be. In the second part of our lab we measured precision by measuring the deviation from each measured values and taking an average. We took three measurements using the 25 ml and 100 ml graduated cylinders and our measurements ranged from .40 ml to 1.90 ml. The lower the gap is between these numbers the better because less variation is more precise measure.To analyze the accuracy of our measurements you can calculate the percent change.

-Roberto & Marisa!