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Creative Learning Systems  cc
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South African distributor of Autograph Graphing and Statistics , Geometer's Sketchpad,
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Autograph   V4 - Probability and Statistics capabilities

 Grouped Data Set: class intervals (regular/unequal/auto or integers) enter frequencies/ auto-calculate from raw data Interpret as continuous or discrete; manual data entry, or import/export a CSV file or copy/paste from Excel or generate from probability distributions Statistical diagrams: frequ./frequency density; frequency polygon, cumulative frequency; box & whisker plot; dot plot Data measurements: frequency or probability by area (histogram) x, F, quartiles, median (cum. frequency) all limits moved dynamically Sampling methods: single or multiple samples from a data set dot-plot of distribution of sample means; central limit theorem demonstrated. Discrete probability distributions: rectangular, binomial, Poisson, geometric, user binomial (n, p) and Poisson. Parameters can be animated Continuous probability distributions: rectangular, normal user-defined: any f(x) can be entered normal parameters (m, s²) can be animated. Probability measurements: probability, cumulative probability; inverse calculations (continuous distributions) Best fit binomial/Poisson/normal to data set; Poisson/normal fit to binomial (animated) Text options: table of probabilities; table of statistics; stem and leaf (in results box: can be copied and pasted out) 'AUTOGRAPH EXTRAS' classroom demonstrations 1. Area of circle demonstration 2. Trigonometry demonstration 3. Monte-Carlo simulation 4. Confidence intervals 5. 1, 2, n-dice simulations 6. Poisson grid Click here for more information on graphing with Autograph

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