Business Education  Standard 13.  Analyzes and interprets data using common statistical procedures, charts, and graphs   Level IV (Grade 912)   1.  Uses statistical concepts to analyze data, evaluate results, and draw conclusions (e.g., data found in financial reports)   2.  Uses tables, graphs, diagrams, and charts to obtain or convey quantitative information (e.g., manual or electronic representations)   3.  Calculates measures of central tendency (i.e., mean, median, mode) and variability (e.g., standard deviation, range, quartile deviation)   4.  Understands how outliers may affect various representations of data (e.g., a regression line might be strongly influenced by a few aberrant points, whereas the scatter plot for the same data might suggest that the aberrant points represent mistakes)   5.  Understands how the readerâ€™s bias, measurement error, and display distortion can affect the interpretation of data   6.  Understands that making an inference about a population from a sample always involves uncertainty and the role of statistics is to estimate the size of that uncertainty 
