A09_207_2B_ScienceMath

A09_207_2B_ScienceMath - Math, Statistics, and Ecology...

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Math, Statistics, and Ecology Quantifying the stuff of the universe or Useful tools for studying the environment Data Nominal Data descriptive Park 1 contains a forest Ordinal Data ordered Park 1 is larger than Park 2 Interval Data quantifiable Part 1 is 40,000 km 2 Qualitative Quantitative
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Choose the right tool for the job Accuracy is Important! Significant Figures The number of digits in a number that tell you useful information. Rules for watching your f gure(s) 1. Zeros within a number are signi f cant. BUT zeros at the end of a number are not (401 = 3; 410 = 2) 2. Trailing numbers that follow a decimal point are signi f cant - including zeros (4.00 = 3) 3. Zeros at the beginning of a number are not signi f cant (0.012 = 2) 4. Conversion factors are not measurements – and can have an in f nite number of signi f cant f gs 5. Calculations – always express answer in least number of signi f cant f gs 6. Rounding – if last number is 5-9 round up, if 0-4 round down
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The number of digits in a number that tell you useful information. 417 = 3 sig f gs 0.0019 = 2 sig f gs 1.1076240 = 8 sig f gs Significant Figures The number of digits in a number that tell you useful information.
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A09_207_2B_ScienceMath - Math, Statistics, and Ecology...

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