Writing A Proper Hypothesis Ari Moesriami Barmawi

The hypothesis is the foundation of the research   The development of a hypothesis is the first step in designing and conducting research   The hypothesis should be clear, specific, and testable (or researchable)   The hypothesis is the link between the theory and the research, that leads us to new discoveries

The Hypothesis…   Is a prediction for the outcome of an experiment   Explains facts and guides the research to possible outcomes   Is valuable because: States the relationship between the all of your variables to study   You are ALWAYS testing to find relationships Explains why these occur

Parts of the Hypothesis Statement   Independent Variable: The condition be studied. It is controlled by the experimenter. ex. Water   Dependent Variable: The condition affected by the independent variable. It can’t be controlled by the experimenter. ex. Plant Growth   Control: The condition that is represented in a normal situation.

Writing A Proper Hypothesis Generally speaking

A hypothesis must satisfy the following requirements…  Be expressed in a declarative statement  Postulate a relationship between variables  Reflect a theory which will guide the research  Be brief and concise  Be testable and/or provable

Hypothesis Checklist   Does it suggest the relationship between two variables?   Does it specify the nature of the relationship?   Does it imply the research design to be used to study the relationship?   Does it indicate the population to be studied?   Is it free of mention of specific measures/statistical tests?   Is it free of unnecessary methodological detail?

Writing A Proper Hypothesis Using the “If / Then” Method

Steps to Writing the “If” section of your Hypothesis 1. Start your sentence with the word “If” 2. Write down one of the variables 3. Connect statement with one of the following: is related to is affected by causes 4. Write down the other variable

Variables and Controls   A variable is anything that changes in a scientific experiment.   The control is what you use to compare the results to in the end of the experiment.

Two Types of Variable

Writing the “Then” section of your Hypothesis  Write the word then (following the “if” section)  Make a comment on the relationship between those two variables. Ex. If section: If water is related to plant growth, Ex. Then section: then the more you water plants, the bigger they will grow.

Final “If / Then” Statement If water is related to plant growth, then the more you water plants, the bigger they will grow.

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