If you perform the same calculation multiple times, you should show one sample calculation, then list the results for the remainder. Use a reasonable number of significant digits. Plot data on graph paper or using a computer. When answering questions, you should use complete sentences. One-word answers will not usually be acceptable.
Experimental uncertainty is an important aspect of laboratory work.
Make some comment on the accuracy of your data and possible sources of error, even if you are not asked explicitly to do so by the write-ups in the manual. A summary of basic terms in error evaluation can be found in the Lab Manual for Physics 111.