a.

1. Construct a time-series plot for these data. Interpret the plot. (Insert plot here in the word document. No need to provide the Excel sheet) 0.25 marks = 0.15 marks plot; 0.10 marks interpretation 2. What is the sample average? 0.10 marks 3. Calculate the sample standard deviation. 0.10 marks 4. Construct a stem-and-leaf plot and a histogram. Which display provides more information about the process? (*change the bin width to 2; Insert plot here in the word document. No need to provide the Excel sheet) stem-and-leaf plot 0.15 marks; histogram 0.15 marks; Explanation 0.10 marks\f