What command do I use to find this ??? Also the dataset link is https://edge.sagepub.com/system/files/stata_datasets_1.zip

The world dataset variable enpp3_democ measures, for each democracy, the number of effective parliamentary parties: "1-3 parties," "4-5 parties," or "6-11 parties." Use enpp3_democ as the dependent variable to test each hypothesis. For independent variables, test Scholar I's hypothesis using district_size3, which measures, for each democracy, the number of members per district: "single-member" districts, more than one but fewer than six members ("> 1 to 5"), and countries with "6 or more members" per district. Test Scholar 2's hypothesis using frac_eth3, which classifies each country's level of ethnic/linguistic fractionalization as "Low," "Medium," or "High." C. In the table that follows, record the percentages of cases falling into the lowest code of the dependent variable, 1-3 parties. Average number of members per district Single member 2 to 5 members 6 or more members Percentage having 1-3 parties .V .N