The university is doing a study of the effectiveness of different teaching aids. It is hoped a sample of 500 students can be tested. They will be asked about the aspects of their degree that have enabled them to achieve their best marks on assignments. How might demand characteristics be avoided?Question 26Answera.Have a larger sample size as this will make it easier to detect any significant findings in the datab.Reward the participants for good responses by offering to give a prize for the best contributionsc.Add in extra questions so that the specific details of what the study is investigating is less clear to participantsd.Deceive the participants about the nature of the study by having most of the content unrelated to the study and recruiting participants based on the description of the irrelevant content

A teacher often offers pupils quizzes of three to five questions that cover topics from the current or previous class. Which of the following is likely to be the principal advantage of this practice?     Question 8Answera.Increasing pupils' engagement and participation in learning.  b.Assuring appropriate performance data to offer students a fair mark for the class.c.Reducing the amount of reteaching required for students to grasp curricular content.d.Improving instruction by providing ongoing feedback on teaching effectiveness.

Is this a random sample of DATA2X02 students?What are the potential biases? Which variables are most likely to be subjected to this bias?Which questions needed improvement to generate useful data (e.g. in terms of the way the question was phrased or response validation)?

3. Each student has to show extensive ________________ for effective teamworkQuestion 5Answera.skills and strengthb.research and collaborationc.argument and arroganced.competition and help

A study was carried out to investigate exam performance for university students. One version of the study involved students at the University of Taranaki, who volunteered to be in the study. Two groups were compared: a group that were trained in a new study technique and a group that were asked to use their current study technique. These groups were determined by giving participants the option to choose which group they were in. The researchers conducted a two sample t-test and found a difference of 6.5 between the mean exam scores for each group (p-value = 0.062), with the group that were trained in a new study technique having the higher mean. What kind of study was this (experiment or observational)

Describe how the student will ensure that sufficient data has been collected.