In their book Forecasting and Time Series Analysis, 2nd edition (McGraw-Hill, 1990), D. C. Montgomery, L. A. Johnson, and J. S. Gardiner analyze the data in Table 6-5, which are the monthly total passenger airline miles flown in the United Kingdom, 19641970 (in millions of miles). (a) Draw a time series plot of the data and comment on any features of the data that are apparent. (b) Construct and interpret either a digidot plot or a stem-andleaf plot of these data.

STAT 110: Notes for Week of 10/25/16 Chapter 21 o This section will focus on interpreting data and inferential statistics (making inferences about a population based on data from a population sample). o The sample proportion probably is not equal to the parameter. Sample proportion: p = (# of successes/n) n = number of subjects in the sample o The sample mean is never equal to the population mean. o Since the sample proportion is probably not equal to the parameter, we will take a confidence interval (sample proportion +/- the margin of error) to make a more confident statement about the data. o Sample distribution: the distributio