Definition and purpose of hypothesis

The term hypothesis has been defined in several ways. Some important definitions have been given in the following paragraphs:

1. A tentative supposition or provisional guess “It is a tentative supposition or provisional guess which seems to explain the situation under observation.” – James E. Greighton

2. A hypothesis is a tentative explaination for certain behaviors, phenomena or the events that have occurred or will occur. - L.R.Gay

Purpose

• It provides a tentative explanation of phenomena and facilitates the extension of knowledge in an area.

• It provides the investigator with a relational statement that is directly testable in a research study.

• It provides direction to the research.

• It provides a framework for reporting conclusions of the study.

• It could be considered as the working instrument of theory. Hypotheses can be deduced from theory and from other hypotheses.

• It could be tested and shown to be probably supported or not supported, apart from man’s own values and opinions.

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