Data Commentary Practice

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GRP 5: KONG Chao, MAO Mao, ZHOU Tingting

Figure 1 indicates the corresponding percentages of students’ correct answers to comprehension tasks at different thermal environment.

According to it, we can tell that students' accuracy in answering questions changes when their environment gets hotter. As can be seen, they answered with higher accuracy at 23.5˚C, and kept the percentages of correct answers around 80%. A peak of approximate 85% was reached when the sessions went for 2 hours (120 minutes). Although during the first 1.5 hours (90 minutes) students responded even more correctly at 20˚C, the accuracy percentage then decreased to about 65% in the following time. As for situations at 27˚C, it seemed that students showed a relatively lower degree of accuracy in the whole sessions, and the correct answers accounted for around 65% and never went beyond 70%.

After this, another experiment was conducted with all factors staying the same, except a change in the tasks dealt from English comprehension to mathematics. Results are displayed in Figure 2.

It’s easily to notice that at 23.5˚C students answered also around 80% questions correctly during the 3-hour math session, and performed better 2 hours (120 minutes) later at accuracy of 85%. However the highest accuracy in the first 1.5 hours (90 minutes) was corresponding to the environment temperature setting at 20˚C, and 85% it represented. With time passing, there were more and more wrong answers and the accordingly down-sloping trend of accuracy stopped at the end of the session, at approximate 75%, which were still 10% higher than the best correct answer percentage at 27˚C students could get. The corresponding ratio of right answers began at 60%, then followed an increase and mounted at 65% 2 hours (120 minutes)later. Then it tended to drop slightly, and finally fell to 63%.

From what have been observed in both Figure 1 and Figure 2, it is quite clearly that thermal environment do have an effect on...
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