The null hypothesis (1) - The null hypothesis H is an essential part of any research design and is always tested even indirectly 0 by Martyn

The null hypothesis (1) - The null hypothesis H is an...

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The null hypothesis, H 0 , is an essential part of any research design, and is always tested, even indirectly. by Martyn Shuttleworth (2008) The simplistic definition of the null is as the opposite of the alternative hypothesis , H 1 , although the principle is a little more complex than that. The null hypothesis (H 0 ) is a hypothesis which the researcher tries to disprove, reject or nullify. The 'null' often refers to the common view of something, while the alternative hypothesis is what the researcher really thinks is the cause of a phenomenon. An experiment conclusion always refers to the null, rejecting or accepting H 0 rather than H 1 . Despite this, many researchers neglect the null hypothesis when testing hypotheses , which is poor practice and can have adverse effects. EXAMPLES OF THE NULL HYPOTHESIS A researcher may postulate a hypothesis: H 1 : Tomato plants exhibit a higher rate of growth when planted in compost rather than in soil.

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