13A Research Methods: Nov 2020 Exam Paper Q17-23 by KJ Welsh https://padlet.com/kwelsh51/9mbjknj8n520dxf2 The psychologist decided to design an experiment to test the effects of recreational screen time on children’s academic performance. The psychologist randomly selected four schools from all the primary schools in her county to take part in the experiment involving Year 5 pupils. Three of the four schools agreed to take part. In total, there were 58 pupils whose parents consented for them to participate. The 58 pupils were then randomly allocated to GROUP A or GROUP B. For the two-week period of the experiment, pupils in GROUP A had no recreational screen time. Pupils in GROUP B were allowed unrestricted recreational screen time. At the end of the experiment all pupils completed a 45-minute class test, to achieve a test score. en-us 2022-04-28 06:51:31 UTC 2025-10-30 15:42:46 UTC hello@padlet.com https://study.com/cimages/videopreview/cw5j062lpk.jpg Table 1: Cut and past this word table into your response adding the check marks in the appropriate column kwelsh51 https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2161684428 2022-04-28 06:51:31 UTC https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2161684428 Table 2: The results obtained from the experiment are summarised in Table 2. kwelsh51 https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2161684431 2022-04-28 06:51:31 UTC https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2161684431 Research might have already been carried out danturtle10 https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162634548 2022-04-28 13:33:53 UTC https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162634548 sui danturtle10 https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162636428 2022-04-28 13:34:48 UTC https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162636428 https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162673925 group b (the ones with unlimited recreational screen time) will get a worse score in the test than group a (the ones with limited recreational screen time)]]> 2022-04-28 13:54:54 UTC https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162673925 https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162690897 the mean median and mode for group a are all higher than those of group b, suggesting that in general the results of group a are higher than those of group b . However standard deviation of group b is higher meaning there is a larger range of results in group b than group a ]]> 2022-04-28 14:04:03 UTC https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162690897 students could answer questions about their average daily screen time and the pupils with most similar screen time average could be paired together https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162697982 2022-04-28 14:08:01 UTC https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162697982 https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162713419 It suggests that a higher amount of recreational screen time has a significantly negative effect on academic performance. (Higher mean test scores for group A than group B).]]> 2022-04-28 14:16:01 UTC https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162713419 the mean suggests that group A had better academic performance overall compared to group B and so suggests that screen time results in worse academic performance. The standard deviation suggests that there was a wider range of scores in group B than group A https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162714515 2022-04-28 14:16:41 UTC https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162714515 https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162725674 mann-whitney as it is testing a difference of having no recreational screen time on exam performance and unlimited recreational screen time. the data is ordinal as the difference between each test score is not fixted and also it uses independent design.]]> 2022-04-28 14:22:50 UTC https://padlet.com/kwelsh51/9mbjknj8n520dxf2/wish/2162725674