1. In a survey, 24 IT professionals in Chicago were asked how much their annual salary was for the year 2012. The results are shown below: $109,000 $ 65,000 $ 65,000 $ 59,000 $ 180,000 $ 101,325 $ 130,000 $95,000 $ 81,500 $69,000 $71,500 $ 74,880 $64,000 $72,000 $ 71,000 $ 82,300 $49,000 $51,200 $ 39,000 $48,500 $64,330 $ 41,100 $52,330 $82,000 a. b. 2. Construct a frequency distribution with 5 classes. Create a histogram of the data using the frequency table from question 1-a. the following image, the memory usage of various processes of a computer running a Windows Operating System is shown: a. Create a scatter plot of the memory usage of the processes. b. Find the following measures of central tendency of the memory usage in kilobytes (Kb): Mode c. Mean Median Find the following measures of dispersion of the memory usage in Kb: Range Variance Standard Deviation d. 3. Identify the values that are responsible for the variance of the dataset. Provide a possible solution on how the computer user could decrease the variance of his or her memory usage. Answer the following questions completely, using proper grammar, complete sentences, and correct terminology: a. Explain what it means to have a standard deviation of 0. b. Without doing any calculations, is it possible to tell which of the following 2 sets has a higher standard deviation? Explain your answer. Set 1 = {1,2,3,4,5,6,7,8} Set 2 = {2,4,6,8,10,12,14,16}