Chemistry: The Science in Context (4th Edition)

Published by W.W. Norton & Co.
ISBN 10: 0393124177
ISBN 13: 978-0-39312-417-0

Chapter 1 - Matter and Energy: The Origin of the Universe - Problems - Page 36: 35

Answer

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Work Step by Step

A hypothesis states your predictions about what your research will find. It is a tentative answer to your research question that has not yet been tested. For some research projects, you might have to write several hypotheses that address different aspects of your research question. A hypothesis is not just a guess – it should be based on existing theories and knowledge. It also has to be testable, which means you can support or refute it through scientific research methods (such as experiments, observations and statistical analysis of data). Hypotheses propose a relationship between two or more types of variables. An independent variable is something the researcher changes or controls. A dependent variable is something the researcher observes and measures. If there are any control variables, extraneous variables, or confounding variables, be sure to jot those down as you go to minimize the chances that research bias will affect your results. In order to formulate a hypothesis you need observation/data, background knowledge and a testable question.
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