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From version 0.4 to version 0.5:
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Updated: 2010-09-19 02:15 GMT+2

General:
- Possibility to save, load, and delete dataset where appropriate

Statistical tests:
- Added one sample Student's t-test

Descriptives:
- Histogram can now be created

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From version 0.3 to version 0.4:
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Updated: 2010-09-15 21:00 GMT+2

General:
- Installable on SD-card
- 4 decimal places instead of 3
- Minor issues fixed (padding at About-activity)

Statistical tests added:
- Added one way ANOVA
- Added two sample Student's t-test (both homoscedastic and heteroscedastic)

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From version 0.2 to version 0.3:
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Statistical tests:
- New toolbox for statistical tests
- For now only two Chi^2 (Chi-squarred) tests are implemented: Pearson's Chi^2 test of independence and test of observed vs expected

Distribution tool:
- Typing error: under Tools write "Density: f(x) = F'(x)" or "Mass: P(X = x)" according to whether the distribution is continuous or discrete, respectively, together with proper result and button text (for both plotting pdf/pmf and finding the result)
- The correct chart type for plotting pdf/pmf is automatically chosen
- The numeric support added under "Properties"

Descriptives:
- More descriptives (now n, min, max, mean, std dev and variance, median, skewness, and kurtosis)

General:
- The GUI for choosing a distribution has changed slightly in order to make it more user-friendly and obtain advantages in the code (reuse the same logic as for choosing statistical test)

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From version 0.1 to version 0.2:
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General:
- Icon changed
- Decimal separator always "." no matter the chosen locale of the phone (for consistency purposes)
- Screen rotate issues fixed

Distribution tool:
- Typing error: Continuous distributions density output changed from "F([input]) = ..." to "f([input]) = ..."
- Error description at the parameter tab if the parameters are illegal when trying to plot
- Descriptives gets calculated automatically when sampling data
- The link under properties has been made clickable