4 TYPES OF INVESTIGATIONS Investigation Purpose Includes a Has Has a Type Hypothesis Independent Control and and Experimental Dependent Group Variables Descriptive To draw No, but does No No conclusion answer a question Comparative To Yes Yes No determine relationships Experimental To Yes Yes Yes determine a causal relationship Historical To use data Yes Yes, but Yes, but (Secondary that already determined determined Research) exists to by original by original determine investigation investigation causal relationships
4 TYPES OF INVESTIGATIONS Investigation Type Purpose Includes a Hypothesis Has Independent and Dependent Variables Has a Control and Experimental Group Descriptive To draw conclusion No, but does answer a question No No Comparative To determine relationships Yes Yes No Experimental To determine a causal relationship Yes Yes Yes Historical (Secondary Research) To use data that already exists to determine causal relationships Yes Yes, but determined by original investigation Yes, but determined by original investigation
experimentation_versus_investigation.docx