3. Visualization and analysis of qualitative data. (Half a page) Choose another variable, of the ordinal or nominal level. If there are no qualitative variables in your data (check carefully!), convert one of the variables to ordinal level. Create a frequency distribution (pivot table) for this variable and a graph with all necessary labels. Use relative frequencies (%). Filter out blank values in the pivot table. Save in Excel, name the tab "Qualitative". Copy the Frequency (pivot table) and the graph to the Word report. 3.1 Find all possible measures of centre for the variable. Explain what each of them represents and how they can be useful. 3.2 Write 2 observations about the distribution of this variable