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1 For the class of 50 students of computing detailed in Exercise 1.1, use R to:obtain the summary statistics for each gender, and for the entire class;calculate the deciles for each gender and for the entire class;obtain the skewness coefficient for the females and for the males.

2 It is required to estimate the number of message buffers in use in the main memory of the computer system at Power Products Ltd. To do this, 20 programs were run, and the number of message buffers in use were found to beCalculate the average number of buffers used. What is the standard deviation? Would you say these data are skewed?

3 To get an idea of the runtime of a particular server, 20 jobs were processed and their execution times (in seconds) were observed as follows:Examine these data and calculate appropriate measures of central tendency and dispersion.

4 Ten data sets were used to run a program and measure the execution time. The results (in milliseconds) were observed as follows:Use appropriate measures of central tendency and dispersion to describe these data.

5 The following data give the amount of time (in minutes) in one day spent on Facebook by each of 15 students.Obtain appropriate measures of central tendency and measures of dispersion for these data.