SummaryStats Most of us are comfortable finding the mean or median without technology. We understand and can explain what each measure represents. The standard deviation is more challenging in meaning and results in error-prone lengthy calculations if using pencil and paper. Below are technology options for finding summary statistics (mean, median, range, standard deviation...). The statistics, you will find, meet the required number of decimal places for correct responses to online exercises. Good news: Once you master the how-to of technology, it takes only seconds to generate summary statistics. Option 1: Calculator guides are in the text, usually at the end of select sections. The below image is for finding summary statistics. TI-84 summary stats.jpg Recall: Standard deviation formulas differ for a population and a sample. Thus, TI-84 displays two standard deviations. If you are working with a sample, use S-x (mathematically, the larger value). Option 2: StatCrunch links are posted under Modules (below the link to your textbook). The videos explain how to graph, use summary statistics, and technology skills for topics to be studied. For StatCrunch summary statistics, a second video tutorial is posted. StatCrunch video links Link to an external site. https://www.statcrunch.com/help?example_id=61 Option 3: Excel is a Microsoft software product available on Windows computers. Data is entered in an Excel spreadsheet and summary statistics are found. Excel can be used to generate graphs, find parameter estimates, or perform statistical tests. View the videos below: 9 Ways to View Basic Summary Statistics in ExcelLinks to an external site. https://www.youtube.com/watch?v=oV4l4zyrJeI&feature=youtu.be 9 Ways to View Basic Summary Statistics in Excel https://www.youtube.com/watch?v=62i1fqKhNhg&feature=youtu.be ExcelLinks to an external site.

Discussion Post: The number of tornadoes in each of the fifty US States is listed below: Data_tornadoes.JPG 1. Using technology, find the summary statistic below. a. Mean. b. Standard Deviation accurate to 4 decimal places. c. Variance accurate to 5 decimal places. 2. Identify and describe your experience using the preferred technology tool (Calculator, StatCrunch, or Excel).