Characteristics of hypothesis

A good hypothesis must possess the following main characteristics:
i)        Hypothesis should be clear and precise.  If the hypothesis is not clear and precise, the inferences drawn on its basis cannot be taken as reliable.
ii)      Hypothesis should be capable of being tested.  Some prior study may be done by researcher in order to make hypothesis a testable one.  A hypothesis “is testable if other deductions can be made from it which, in turn, can be confirmed or disproved by observation.” 
iii)    Hypothesis should state relationship between variables, if it happens to be a relational hypothesis.
iv)    Hypothesis should be limited in scope and must be specific.  A researcher must remember that narrower hypotheses are generally more testable and he should develop such hypotheses.
v)      Hypothesis should be stated as far as possible in most simple terms so that the same is easily understandable by all concerned.  But one must remember that simplicity of hypothesis has nothing to do with its significance.
vi)    Hypothesis should be consistent with most known facts i.e. it must be consistent with a substantial body of established facts.  In other words, it should be one which judges accept as being the most likely.
vii) The hypotheses selected should be amenable to testing within a reasonable time.  The researcher should not select a problem which involves hypotheses that are not agreeable to testing within a reasonable and specified time.  He must know that there are problems that cannot be solved for a long time to come.  These are problems of immense difficulty that cannot be profitably studied because of the lack of essential techniques or measures.

viii) Hypothesis must explain the facts that gave rise to the need for explanation.  This means that by using the hypothesis plus other known and accepted generalizations, one should be able to deduce the original problem condition.  Thus hypothesis must actually explain what it claims to explain, it should have empirical reference.