PPT-Hypothesis and Variables

Step 3 Form a Hypothesis Hypothesis a testable explanation of an observation A hypothesis is NOT just an educated guess about what you think will happen It must be able to be tested . Types of Variables. There are 2 main types of variables: . Independent Variable: . The variable that is changed by the scientist; the ‘. I control. ’ variable. Dependent Variable: . The variable that might change because of what the scientist changes – what is being measured . Observational Method. Experimental Method. Experimental Design. Aims & Hypothesis . Variables: IV, VD & EV/CV . Operationalisation. . Sampling Techniques. Factors Associated with Research Design . A . logical method . of . problem solving. Steps of the Scientific Method. Making . observations. that lead to a . question. Forming a . hypothesis. to answer the . question. Testing the . hypothesis. Hypothesis Testing and . p. -Values. Learning Objectives. Review Lectures 8 and 9. Understand and develop research hypotheses and know difference between them and the null hypothesis. Define independent and dependent variables for a . Scientific Method. What is the scientific method?. Scientists use . certain methods. to seek answers and solutions to problems in nature.. Scientific Method:. Is a special way in which scientists . . Definition of variable:. is a characteristic or attribute of a person or object (polit, 2004).. . Example of some variables. Weight.. Body temperature.. Blood pressure reading.. • Stress level.. Psychological Investigations . Suzie’s goldfish lives in a tank on her desk. The more fizzy drinks she consumes, the more her fish swims around.. Can we say there is cause and effect?. Goldfish and Fizzy Drinks... EQ: What are the most effective ways to carry out a scientific inquiry?. Sometimes in science, events are so big (like the explosion of a volcano), or so small (like the movement of Euglena) or so distant (like the movement of a star) that it is impossible for our brains to understand them in their entirety.. Well defined. Testable. Measurable. Controllable. Reasonable and consistent with existing bodies of knowledge. Consider These Questions. Are serial killers evil by nature?. What is the cause of AIDS?. Chapter 7. Variables and the Structure of Research. Variables and Hypotheses. In social science, we use variables to describe the different characteristics of individuals, groups, organizations and social phenomena. . 5th - 9th December 2011, Rome. A hypothesis. Is the prevalence within each food consumption group significantly different between male-headed and female-headed households?. Both variables are categorical… . ALAN S. BLINDER Institution and Princeton University ANGUS DEATON Princeton University The Time Series Consumption Function Revisited THE RELATIONSHIP between consumer spending a Associate Professor,. Department of Law &. Registrar (Addl. Charge). Bankura University. Hypothesis has a very important place in research.. Hypothesis . is probable or tentative answer to research problem or research question. It is a kind of suggested explanation or solution of the problem which may not be proved always correct. It basically establishes a relationship in between two or more variables related to the subject matter of the research. Dr David Butler. Maths Learning Centre. University of Adelaide. Semester 1 2022. Research and Critical Appraisal. You NEED statistics because things VARY. You want to:. d. escribe how things vary. figure out what is usual.