Stats tester plus vs Tikal

### Features of this statistics app ### 1. By using Stats tester plus, you can perform some parametric and nonparametric statistics tests with an easy operation. 2. Since one sample group (multiple data) is entered in one window, it is easy to enter, add, and modify many data. 3. For tests with multiple input windows, 100 data can be entered for each input window. For tests such as chi-square test (2X2, mXn) and Fisher exact test (2X2), you can enter up to frequency of 100,000,000 4. A built-in 10-keypad in a phone or calculator layout makes data entry easy. Standard iPhone and Mac keyboards are also available, and these can be switched to a 10-keypad at any time. 5. Unlike the Mini version, Stats tester plus allows one-sided tests to be performed following two-sided tests for some tests. In addition, for tests that perform continuity correction, it is also possible to display the test results without continuity correction. 6. Input data and all output screen can be recorded by sharing (mail, memo). No need to take notes on paper. 7. Data can be imported into the input window from apps such as Excel and Numbers by copy/paste, although it takes a little time. When you have an M1~3 Mac, you can simply copy/paste Numbers data into the input window of this app. 8. You can check the usability of this app with Stats tester mini (free version). Stats tester mini has fewer tests than Stats tester plus and does not support one-tailed tests, but its usability is the same as Stats tester plus. Please download Stats tester mini and check the usability of this Plus version of Stats tester. ## how to use ## Each test screen has [Help], [Example], [Graph], [Calc], [Clear] and [Share] buttons. You can check the usage details in the free version of Stats tester mini. ## Statistics methods ## Currently, 27 methods are available. A. Basic Statistics (Mean,SD,Median, etc) [Graph] 1. Mean, SD, Skewness, Kurtosis, etc. ( Means (Arithmetic, Geometric and Harmonic), Standard Deviation、Standard Error、Confidence interval (CI, 95 and 99%), Variance, Unbiased variance, Coefficient of variation (%CV), Skewness, Kurtosis) 2. Median, Range, Quartiles and Boxplot [Graph] (Median, Maximum, Minimum, Quartiles, Quartile Deviation, Boxplot) B. Test for Mean,Variance,etc. (Parametric) 1. One-Sample t-Test (to Compared Mean) [Graph] 2. Two-Sample t-Test (Student's and Welch's t-Tests) [Graph] 3. Paired t-Test (Paired Sample) [Graph] 4. F-Test of Variance for Two Samples [Graph] 5. Levene Test of Variance for Multiple Samples [Graph] 6. One-Way Analysis of Variance (ANOVA) [Graph] 7. Multiple t-Test with Bonferroni Correction [Graph] C. Test for Median, etc. (Nonparametric) 1. Mann-Whitney U Test (Two Samples) [Graph] 2. Median Test (Two Samples) [Graph] 3. Wilcoxon Signed Rank Test (Paired Sample) [Graph] 4. Kruskal-Wallis Test & Multiple Comparisons (by Bonferroni Correction) [Graph] D. Test for Proportion 1. Sign Test (Paired Sample) [Graph] 2. Binomial Test [Exact Method] (One-Sample Proportion Test) 3. Binomial Test [Approx Method] (One-Sample Proportion Test) 4. Two-Sample Proportion Test [Approx. Method] E. Test for Frequency 1. Chi-Square Test (Goodness of Fit) [Graph] 2. Chi-Square Test (2x2, Independence) 3. Chi-Square Test (mxn, Independence) 4. McNemar's Test (Chi-Square Test for Paired Sample) 5. Fisher's Exact Test (2x2) F. Test for Correlation 1. Linear Regression and Test for Pearson Correlation Coefficient [Graph] 2. Test for Differences in Correlation Coefficients (One Sample) 3. Test for Differences in Correlation Coefficients (Two Samples) 4. Spearman Rank Correlation Test [Graph] G. Other (Normality Test) 1. Shapiro-Wilk Test (Normality) and Q-Q Plot [Graph]

This calculator app is loosely based on a pocket calculator designed in Japan in 1978. It provides arithmetic, trigonometric, logarithmic and statistical functions and fairly high internal precision with a display mode of 8 digits in portrait and 12 digits in landscape mode, which can be interchanged freely while entering numbers, and a scientific notation mode with 5/9 digits mantissa and 2 digits exponent. Internally it uses Decimals for primitive operations and Double floating point numbers for everything else, so in general it should be somehow more accurate than the original calculator model it was based on. I added a graph display for the statistical mode, a shareable calculation log, a manual (all accessible by tapping on the title line above the buttons) and a random number function that produces random numbers in the range [0..1]. The operational correctness is checked with unit tests. All examples from the original manual work with the same or with higher accuracy. There are about 45 unit tests until now covering different combinations, which should be sufficient for everyday educational or household calculations. The unit test set will be further expanded with future versions. The app does not store or transmit any data apart from the user-initiated log file sharing, it just needs permission to install and use the included 7 segment font for emulating the LCD display. There are no advertisements. The "OFF" Button exits the application immediately. Localizations for other languages are in preparation, this mainly concerns the manual and translations in the additional views. The main display uses a universal standard 7-segment display without localization options for clarity. The dark mode aims at a LED effect instead of LCD. Made the default blue instead of red, though there were no blue LEDs in 1978. In the settings you can choose from red, green or blue for now. The localizations may still contain errors and missing translations. Segment7Standard font license: SIL Open Font License (OFL) Link: https://www.fontspace.com/segment7-font-f19825 Music in App Previews: Excerpts from Gustav Holst, "The Planets": "Mercury the Messenger" and "Neptune the Mystic", performed by the London Symphony Orchestra, conducted by Gustav Holst, published by Columbia 1923, Recording in the Public Domain Link: https://imslp.org/wiki/The_Planets,_Op.32_(Holst,_Gustav) Known issues: - Klingon mode shows an obfuscated log that still does not make much sense.This is because Klingon ist not integrated into Unicode, and logging is probably not compatible with the Klingon honor code anyway. Written in Swift 5. This application is completely free of AI, so you can be fairly sure only human errors are to be reckoned with...