1. A unit coordinator knows that few students mix up the interpretation of p value of an assumption test and p value of a 'hypothesis test' (a test used to test the study hypothesis e.g. t tests, ANOVA....). P value from an assumption test can only tell us if the assumption is met or violated whereas the p value of the hypothesis test determines whether we will retain or reject null and therefore, it will determine our overall conclusion about the study. Students studying second year statistics unit responded to a statement 'P value scares me'with possible response options as 'Always, Most of the times, Sometimes, Rarely and Never'. If the unit coordinator wants to explore whether response rankings are significantly different between Internal and Fully Online students, which test should be selected from the options below?

Wilcoxon Signed Rank Test

Independent Samples t test

Shapiro-Wilk test

Levene's test

Mann-Whitney U test

2.Researchers wanted to assess if there was any relationship between annual income and educational achievement. Educational achievement was recorded as an ordinal variable whereas continuous data for annual income showed extreme positive skew. In this situation which test should be used?

Chi Square test
	Kruskal-Wallis ANOVA
	Pearson's correlation coefficient
	Spearman's rho
	Independent Samples t test

Kruskal-Wallis ANOVA

2. A survey done previously on pet preferences was repeated to make it more inclusive this time. Participants were asked if they considered themselves either a 'cat person', or a 'dog person' or a 'gold fish person' (surprisingly no one had pet preference other than these three). According to the results majority of females considered themselves to be a 'gold fish person', males were more likely to be a 'cat person' and respondents of 'other' gender were more likely to be a 'dog person'. To explore if pet preference was associated with gender, which one of the following tests will be suitable?

Wilcoxon Signed Rank test

Kruskal-Wallis ANOVA

Spearman's rho

Chi Squared test

Mann-Whitney U test

3. A team of 99 academic researchers attend a 3-day 'Writing Retreat'(aka boot camp for writing research papers).At the conclusion of this so calledRetreatthey were asked to rate their opinion for future need and usefulness of this event. Having barely survived, only 60% responded. The response options were 'Not useful, Useful & Very useful'. The organizers wanted to exploreif opinion depended on gender. Which one of the following tests will be a suitable choice?

Spearman's rho

Kruskal-Wallis ANOVA

Independent Samples t test

Wilcoxon Signed Rank test

Chi Squared test

4. A representative sample of 50 EPID1000 students was asked to rate the importance of studying this unit from 1 to 10 (1= Not important at all and 10= Absolutely essential). After everyone recorded their response rating, they were shown a 10-minute video that demonstrated the importance of skills and knowledge acquired through this unit that will be essential as informed health professionals in understanding and evaluating published evidence. This video also highlighted how studying EPID1000 was going to help them survive the follow on units and their assignments. After the video, students were given the option to change their previous rating. Surprisingly, every one took up the offer and provided a new and higher rating. Which test will be a suitable choice if we want to investigate whether the ratings changed significantly after watching the video?

	Wilcoxon Signed Rank test
	Spearman's rho
	Chi Squared test
	Mann-Whitney U test
	Kruskal-Wallis ANOVA