Conquer Statistics

CORETRIX TECHNOLOGY LIMITED

About this app

Turn statistics from formulas you memorize into ideas you can see, explain, and use.

Conquer Statistics builds statistical intuition across five parts:

Part 1: Exploring one-variable data and collecting data
• Investigative questions, populations and samples, parameters and statistics
• Categorical data, bar charts, pie charts
• Dotplots, stemplots, histograms, cumulative frequency plots
• Describing distributions, center and spread, z-scores, boxplots
• Sampling methods, bias, observational studies, and experiments

Part 2: Probability, random variables, and sampling distributions
• Two-way tables, probability rules, conditional probability, independence
• Random variables, expected value, variance
• Binomial and normal distributions, normal calculations
• Sampling distributions and the central limit theorem

Part 3: Inference for proportions and categorical data
• Estimators and sampling distributions
• Confidence intervals and tests for one proportion
• Confidence intervals and tests for two proportions
• Chi-square tests of independence and homogeneity

Part 4: Inference for means and quantitative data
• Sampling distribution of means and the t-distribution
• Confidence intervals and tests for one mean
• Paired data and two independent samples
• Simulation p-values, power, and errors

Part 5: Regression analysis
• Scatterplots, correlation, coefficient of determination
• Least-squares regression line, slope and intercept
• Residuals, residual plots, and influence

Every part includes
• Knowledge cards with definitions, key points, worked examples, pitfalls, and tips
• Practice sets with multiple-choice and free-response questions, full explanations, and rubrics
• A reference sheet of formulas, terms, and statistical-thinking tips

Why it works
• Charts are drawn inside the app: histograms, boxplots, normal curves, scatterplots, and regression lines — crisp and easy to read in dark mode
• Three interface languages: Traditional Chinese, Simplified Chinese, English
• Progress, answer history, and mistakes stay on your device; no account needed
• Works offline after the first download
• No ads, no in-app purchases, no third-party tracking

Who it's for
• High-school and university students learning statistics
• Learners reviewing statistical concepts and problem-solving methods
• Self-learners who want to read and reason with data

Privacy
No account is required. To download lessons and understand app usage, the app contacts our content server with a randomly generated installation identifier. The server records the installation identifier, IP address, IP-derived country, platform, operating system version, app version, last-used time, and request count for content delivery, access recognition, and usage statistics; it is not used for tracking and is never sold. Learning progress stays on your device. Usage data is retained for 90 days. No ads, no in-app purchases, no third-party SDKs.

What’s new

1.0.0 update:
• Practice now has a New / Review switch: answer unseen questions or revisit ones you've completed.
• Swipe left or right during practice to move between questions.
• Fixed an issue where a multiple-choice explanation could appear for a different question.
• Complete five-part course: 106 knowledge cards, 30 practice sets, 237 multiple-choice and 91 free-response
questions.