Tham khảo tài liệu 'engineering statistics handbook episode 2 part 10', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | . Graphical Output and Interpretation and comparing confidence intervals in these cases. NIST rTT TTZ SEMATECH H WE TOOLS AIDS SEAftCH BACK NỄXĨ http div898 handbook eda section4 7 of 7 5 1 2006 9 58 33 AM . Quantitative Output and Interpretation ikIO i iE ENGINEERING STATISTICS HANDBOOK TOOLS a AIDS I SEARCH back NỄXĨ1 1. Exploratory Data Analysis . EDA Case Studies . Case Studies . Uniform Random Numbers . Quantitative Output and Interpretation Summary Statistics As a first step in the analysis a table of summary statistics is computed from the data. The following table generated by Dataplot shows a typical set of statistics. SUMMARY NUMBER OF OBSERVATIONS 500 LOCATION MEASURES DISPERSION MEASURES MIDRANGE 00 RANGE 00 MEAN 00 STAND. DEV. 00 MIDMEAN 00 AV. AB. DEV. 00 MEDIAN 00 MINIMUM LOWER QUART. 00 LOWER HINGE 00 UPPER HINGE 00 UPPER QUART. 00 MAXIMUM 00 RANDOMNESS MEASURES DISTRIBUTIONAL MEASURES AUTOCO COEF ST. 3RD MOM. 00 ST. 4TH MOM. 01 00 ST. WILK-SHA 02 UNIFORM PPCC 00 NORMAL PPCC 00 http div898 handbook eda section4 1 of 7 5 1 2006 9 58 34 AM . Quantitative Output and Interpretation TUK PPCC 00 CAUCHY PPCC 00 Note that under the distributional measures the uniform probability plot correlation coefficient PPCC value is significantly larger than the normal PPCC value. This is evidence that the uniform distribution fits these data better than does a normal distribution. Location One way to quantify a change in location over time is to fit a straight line to the data set using the index variable X 1 2 . N with N denoting the number of observations. If there is no significant drift in the
