Stats tester mini vs MarsMissionPro

### Features of this app ### 1. By using Stats tester mini, you can perform some statistics tests and obtain graphs by an easy operation. 2. Since one sample group (multiple data) is entered in one window, it is very easy to enter or edit the data. 3. Unlike other test apps, not only final conclusions such as p-values, but also intermediate results are shown. 4. Input data and test results can be recorded by sharing (mail, memo). There is no need to make notes on paper. 5. You can import data by copy/paste from apps such as Excel, Numbers, memo, etc. 6. Numerical input is very easy with the built-In ten-keyboard (phone and calculator layouts). 7. This app has been fully verified to work with the M1 Mac. The M1 Mac makes it easy to work with other apps (Numbers, Excel etc.). ## how to use ## Each test screen has [Help], [Example], [Graph], [Calc], [Clear] and [Share] Buttons. On the "How to use this app" screen, details such as its features and specifications are written. ### Statistic methods ### Below are the statistical methods in Stats tester mini. (The upgraded version "Stats tester plus" offers 18 more methods.) 1. Mean, SD, Skewness, Kurtosis, etc. 1) Arithmetic, Geometric and Harmonic means 2) Standard Deviation (2) 3) Standard Error of the mean (sem) 4) 95 and 99% Confidence interval (CI) 5) Sum 6) Sum of Square 7) Variance, Unbiased variance 8) Coefficient of variation (%CV) 9) Skewness (2) 10) Kurtosis (3) 11) Graph 2. Median, Range, Quartiles and Boxplot. 1) Median 2) Maximum 3) Minimum 4) 1st Quartile 5) 3rd Quartile 6) Quartile Deviation 7) Boxplot Graph 3. One-Sample t-Test (to Specified Mean) 1) Mean 2) Standard deviation (2) 3) Standard error of the mean (sem) 4) One-sample t-test --> p value 5) Confidence interval (CI) 6) Graph 4. Two-Sample t-Test (Student's and Welch's t-Tests) 1) Mean 2) Standard deviation (2) 3) Standard error of the mean (sem) 4) Student t-test --> p value 5) Welch's procedure --> p value 6) Graph 5. Paired-Sample t-test 1) Mean 2) Standard error of the mean (sem) 3) Paired t-test --> p value 4) Graph 6. One-Way Analysis of Variance (ANOVA) 1) Mean 2) Standard error of the mean (sem) 3) Analysis of variance --> p value 4) ANOVA table 5) Graph 7. Linear Regression and Test for Pearson Correlation Coefficient 1) Correlation coefficient 2) Regression coefficient (Linear Regression) 3) Coefficient of determination 4) Test for correlation coefficient --> p value 5) Graph 8. Shapiro-Wilk Test (Normality) and Q-Q Plot 1) Kurtosis α4 (α4=3 --> normal distribution) 2) Shapiro-Wilk test --> p value 3) Q-Q Plot (Normal probability plot) graph 9. Chi-Square Test (2X2 Independence) ### Acknowledgment ## DGChartst library distributed under the Apache 2.0 license was utilized to make graphs. https://github.com/danielgindi/Charts http://www.apache.org/licenses/LICENSE-2.0.html

MarsMissionPro is a powerful yet simple educational app that helps you explore how missions to Mars are planned. Designed for students, engineers, educators, and space enthusiasts, the app combines orbital visualization, rocket calculations, crew planning, and interactive learning tools in one clean and intuitive interface. At the center of the experience is an interactive 2D orbital map showing the Sun, all eight major planets, selected dwarf planets, and sample exoplanets from the Gliese catalog. A transfer trajectory from Earth to Mars illustrates how spacecraft travel between planets and helps users understand interplanetary motion. MarsMissionPro includes a rocket delta V calculator based on the Tsiolkovsky rocket equation. Enter exhaust velocity, initial mass, and final mass to estimate rocket performance and determine whether a mission has sufficient capability to reach Mars. Additional metrics include mission status, mission difficulty, mission readiness score, fuel efficiency rating, fuel burn percentage, and delta V gap. Mission timing tools calculate launch windows, estimated Earth to Mars travel time, and Mars sol trip duration. Communication delay modules show realistic one way and round trip signal delays between Earth and Mars. Earth and Mars distance information highlights how planetary separation changes over time. Crew planning tools estimate oxygen, water, and food requirements using crew size and mission duration. The app calculates total life support mass and provides a habitat area estimate to demonstrate how human missions require careful resource planning. Educational calculators include Weight on Mars and Age on Mars, allowing users to see how gravity and time differ on another planet. Solar Energy on Mars shows how much sunlight is available compared with Earth. The Mission Cost Estimator generates a simplified educational score based on mission complexity. Launch Risk Level and Mission Badge provide easy to understand summaries of mission preparedness. The Mission Report feature compiles all calculations into a comprehensive summary that can be saved or copied for sharing and review. Rocket Presets allow users to load reusable rocket inspired parameters instantly, while Reset Values returns the app to default settings. MarsMissionPro also includes a rich learning section featuring Mars Facts, Mars Environment, Mission Phase Guide, Planet Comparison, Mission Safety Checklist, Exoplanet Facts, Space Glossary, and Learn Mode. These modules explain important concepts such as orbit, delta V, launch windows, radiation, and life support. Features include: 2D Solar System Orbit View Earth to Mars Transfer Path Launch Window Calculator Travel Time Estimator Mars Sol Converter Rocket Delta V Calculator Mission Status and Difficulty Mission Readiness Score Fuel Burn Percentage Fuel Efficiency Rating Delta V Gap Weight on Mars Age on Mars Crew Mission Planner Oxygen Water and Food Estimates Total Life Support Mass Mars Habitat Estimate Mission Cost Estimator Launch Risk Level Mission Badge Solar Energy on Mars Mission Report Save and Copy Rocket Presets Mars Facts and Environment Mission Phase Guide Safety Checklist Exoplanet Facts Space Glossary Learn Mode iPhone and iPad Support MarsMissionPro is built to make space science approachable and inspiring. Whether you are learning the fundamentals of astronautics, teaching students about Mars missions, or exploring humanity’s future among the stars, MarsMissionPro provides a practical and engaging way to understand the journey from Earth to Mars.