have my results from a simple titration experiment (sodium carbonate against hydrochloric acid) Average titre of 53.27 cm3 which i am happy with but how can i state that my results are accurate and how can i convince my lecturer my results are reproducable?

Thanks very much.

I don't know how you convince your instructor about the accuracy of the experiment unless you were given a previously analyzed sample and s/he can check your results against that of the other report. As for the precision, you give him/her the results of the SEPARATE titre (not the average). If they agree very well then your precision is good; if not, the precision is not so good.