how do you merge multiple survey waves how often should data be merged for multiple wave why do we do surveys using multiple variables when merging multiple surveys is it best to merge different types of questions? should the data be merged into the same variable when merging multiple waves of survey should the data from each wave be merged into the same variable when to merge dna from a nonpanel survey when merging two waves of a survey can you merge different types of questionnaires to make a single variable can you merge multiple waves of a survey into one variable? what variable is used to merge multiple waves of a survey? how to merge waves of a survey when merging different waves of a survey is each question in a different variable? what should the data be in multiple wave survey? when do you merge different data from a non-panel survey when combining two waves of a survey can the variables be merged which variables of a survey are considered separate why do you merge multiple waves of data when combining different surveys should the data be merged into one variable can you merge multiple waves of data in a survey with a variable