In the equipment available to you, the buret is the most accurate and precise piece of apparatus in determining the volume of liquids and solutions dispensed. From the graduation markers depicted you can see that the smallest division on the buret is 0.1mL and you will have to approximate the second decimal place. In general, we read the bottom of the meniscus, which is facilitated by placing a dark piece of paper behind the buret. Your TA will demonstrate a correct method to use a buret. These are two terms that we have used in this experiment and in the previous one and they often lead to some confusion.
Precision is the degree to which a number of measurements are reproducible.
How close each measurement is to one another. Accuracy , on the other hand, is how good the actual measurement is. How does it compare to the known value, or, in the case where it is not known, how close is it to identical measurements being made by other people on the same system. It is possible to have a high degree of precision yet lack accuracy. This is often either the failure in some aspect of the experimental design or of the operator.