variables and hypothesis

• What does operationalise mean in research?


  Ensuring that variables are accurately measured in order to replicate
• What is the independent variable (IV)?


  Manipulated variable
• What is the dependent variable (DV)?


  Measured variable
• What does extraneous variable (EV) refer to?


  Any variable other than the IV that affects the DV
• What is a hypothesis in research?


  A prediction/statement of what you expect to find in your research, it must be testable
• What does the null hypothesis state?


  There is no difference/relationship between the variables
• What does the alternative hypothesis state?


  There is a difference/relationship between the variables
• What is a directional hypothesis?


  It states the direction that the variables will go - that one IV will impact the DV over another
• What is a non-directional hypothesis?


  It states that there will be a difference/relationship between the variables but is unsure what the direction will be