Null hypothesis Watch

Student2001:)
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For a null hypothesis in biology is it incorrect to say there is no SIGNIFICANT difference between....
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nzy
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If the aim of an experiment specifically says it intends to investigate if there is a 'significant difference' between two conditions, or something to the same effect, or the experiment is in a practical context where, even if there is one, any small correlation is so undetectable that it makes no difference, then 'significant' would be appropriate.
Otherwise, 'significant' kind of implies that there is actually a difference between two conditions, only one that the technique used was not precise enough to detect - in that case your results would support a null hypothesis which says 'no difference' anyway. In this case, you might as well stick to 'no difference' to be safe (although it shouldn't make that much of a difference).
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Student2001:)
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thank you so much! Do you think an examiner would be picky about it?
(Original post by nzy)
If the aim of an experiment specifically says it intends to investigate if there is a 'significant difference' between two conditions, or something to the same effect, or the experiment is in a practical context where, even if there is one, any small correlation is so undetectable that it makes no difference, then 'significant' would be appropriate.
Otherwise, 'significant' kind of implies that there is actually a difference between two conditions, only one that the technique used was not precise enough to detect - in that case your results would support a null hypothesis which says 'no difference' anyway. In this case, you might as well stick to 'no difference' to be safe (although it shouldn't make that much of a difference).
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