Q2: [25]Top Visited Sites in December 2003 The most visited site on the internet is Yahoo!, which boasted 111,271 thousand unique visitors in December 2003. The number of unique visitors at the top 25 sites are shown in the table: Site Unique Visitors (Millions) Yahoo! Sites 111.3 Time Warner Network 110.5 MSN-Microsoft Sites 110.0 eBay 69.2 Google Sites 61.5 Terra Lycos 52.1 Amazon Sites 45.7 About/Primedia 42.6 Excite Network 25, 1 CNET Networks 25.1 Walt Disney Internet 25.1 Viacom Online 24.7 American Greetings 24.4 Weather Channel 23.8 Real.com Network 22.3 Verizon Communications 22.1 Wal-mart 21.4 Shopping.com Sites 21.3 Symantec 19.9 AT&T Properties 17.5 InfoSpace Network 17.3 Monster Property 17.3 EA Online 16.8 SBC Communications 16.5 Sony Online 16.5 (a) [2]Can you tell by looking at the data whether it is roughly symmetric? or is it skewed? (b) [15] Calculate the mean, median, standard deviation, 25th and 75th percentile. Use the measures (mean, median) to decide whether or not the data are symmetric or skewed. Which centre of location (mean, median) do you recommend? Justify. (c) [4]Draw a box plot to describe the data and identify the outliers, if any. Explain why the box plot confirms your conclusions in part (b) 3 (d) [2](SPSS) Create the data set in SPSS and find the descriptive statistics (mean, me- dian, standard deviation, 25th percentile and 75th percentile) and boxplot using SPSS and include your output here. (e) [2] (SPSS) Suggest an appropriate graph to describe graphically the variable Visitors, draw the graph using SPSS and include the output here