There are two basic types of cases; criminal and civil.
A criminal case results when a person is accused of committing a crime. You, as a juror, must decide whether the person charged is guilty or not guilty. The accused person is presumed innocent, and the city or state, represented by a prosecutor, must prove guilt beyond a reasonable doubt. The verdict must be 6-0 (unanimous).
A civil case results from a disagreement or dispute between two or more parties. In a civil case, you, as a juror, must answer questions of disputed facts based upon the testimony and evidence admitted by the Judge. The answers to these questions are called the verdict. In civil cases, 5 out of 6 must agree on the verdict.