How to Design and Report Experiments by Andy Field & Graham J Hole

Author:Andy Field & Graham J Hole [Field, Andy]
Language: eng
Format: azw3, epub
ISBN: 9781446260029
Publisher: SAGE Publications
Published: 2002-12-20T05:00:00+00:00

Levene’s test indicated that the assumption of homogeneity of variance had been violated, F(5, 114) = 10.25, p < .001. Transforming the data did not rectify this problem and so F-tests are reported nevertheless. The results show that using a mobile phone significantly affected the size of brain tumour found in participants, F(5, 114) = 269.73, p < .001.

Of course we should really report the effect size as well:

Levene’s test indicated that the assumption of homogeneity of variance had been violated, F (5, 114) = 10.25, p < .001. Transforming the data did not rectify this problem and so F-tests are reported nevertheless. The results show that using a mobile phone significantly affected the size of brain tumour found in participants, F(5, 114) = 269.73, p < .001, r = .96. The effect size indicated that the effect of phone use on tumour size was substantial.

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