758 APPENDIX B Data Sets (Complete data sets available at www.TriolaStats.com) Data Set 25: Tornadoes Data are from 63,160 tornadoes (first five rows shown here) arranged chronologically. MONTH is the month of the tornado 11 = January2, F SCALE is the Fujita scale rating of tornado intensity, FATALITIES is number of deaths caused by the tornado, LENGTH (MI) is the distance the tornado traveled in miles, and WIDTH (YD) is the tornado width in yards. Data are from the National Weather Service. TI-83, 84 list names FSCAL, FATAL, TLEN, TWDTH (TORNADO)*: (no list for YEAR and MONTH). Missing F-scale values are represented by 9999. *NOTE: TI lists are limited to 500 rows due to calculator memory constraints. YEAR MONTH F SCALE FATALITIES LENGTH (MI) WIDTH (YD) 1950 1 3 0 9.5 150 1950 1 3 0 3.6 130 1950 1 1 0 0.1 10 1950 1 3 1 0.6 17 1950 1 2 0 2.3 300 Data Set 26: Old Faithful Data are from 250 eruptions (first five rows shown here) of the Old Faithful geyser in Yellowstone National Park. INT BEFORE is the time interval (min) before the eruption, DURATION is the time (sec) of the eruption, INT AFTER is the time interval (min) after the eruption, HEIGHT (ft) is the height of the eruption, and PRED ERROR is the error (min) of the predicted time of eruption. Based on data from the Geyser Observation and Study Association. TI-83, 84 list names INTBF, DUR, INTAF, OFHT, PRED (OLDFAITH): INT BEFORE (MIN) DURATION (SEC) INT AFTER (MIN) HEIGHT (FT) PRED ERROR (MIN) 82 251 83 130 4 99 243 76 125 -13 88 250 86 120 -2 92 240 82 120 -6 86 243 87 130 0 Data Set 27: Internet Traffic Data from 9000 arrivals of Internet traffic at Digital Equipment Corporation (first five rows shown here). ARRIVAL TIME is in thousandths of a minute. INTERARRIVAL TIME is the time between consecutive traffic arrivals, in thousandths of a minute. DATA are the numbers of bytes, where a byte is a letter or digit or symbol. TI-83, 84 list names ARRVL, INTER, BYTES (INTERNET)*: *NOTE: TI lists are limited to 500 rows due to calculator memory constraints. ARRIVAL TIME INTERARRIVAL TIME DATA (BYTES) 419 2 0 421 2 5 427 6 512 427 0 512 428 1 512
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