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1 Use the data in “results.txt” to develop boxplots of all the subjects on the same graph.

2 Obtain a stem and leaf of each subject in “results.txt.” Are there patterns emerging?

3 For the class of 50 students of computing detailed in Exercise 1.1, use R toform the stem‐and‐leaf display for each gender, and discuss the advantages of this representation compared to the traditional histogram;construct a box‐plot for each gender and discuss the findings.

4 Plot the marks in Architecture 1 against those in Architecture 2 and obtain the line of best fit. In your opinion, is it a suitable model for predicting the results obtained in Architecture 2 from those obtained in Architecture 1?

5 The following table gives the number of hours spent studying for the probability examination and the result obtained (%) by each of 10 students.Study hours548710610400Exam results73648070855086502025Plot the data and decide if there is a linear trend. If there is, use R to obtain the line of best fit.

6 The percentage of households with access to the Internet in Ireland in each of the years 2010–2017 is given in the following table:Year20102011201220132014201520162017Internet access7278818282858789This set of data is to be used as a training set to estimate Internet access in the future.Plot the data and decide if there is a linear trend.If there is, obtain the line of best fit.Can you predict what the Internet access will be in 2019?