QC3 Formulas

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About this app

This free app allows you to efficiently study QC3 formulas.

A free app for mastering QC Level 3 formulas.

[App Features / About This App]
Contains 13 carefully selected formulas for Quality Control Level 3. Ideal for exam preparation, practical application, and basic statistical study. Each formula comes with an explanation of the calculation and symbols, making it easy to understand even for beginners. Covers 13 essential QC Level 3 formulas for exam prep, on-the-job reference, and building a statistical foundation. Each formula includes clear explanations of symbols, making it beginner-friendly.

[Formulas Included]
■ Basic Statistics (7): Mean, Range, Median, Sum of Squared Deviations, Sample Variance, Standard Deviation, Coefficient of Variation
■ Probability Distributions (1): Standardization (Z-Score)
■ Control Charts (2): Control Limits for X̄-R Charts
■ Correlation & Regression (1): Pearson Correlation Coefficient
■ Process Capability Indices (2): Cp and Cpk

[Learning Features]
■ Favorites Favorites
Save important formulas with one tap. Perfect for reviewing right before an exam or focusing on weak formulas.
Save any formula with one tap for quick access during last-minute review or focused practice.

■ Progress Tracking
Check off formulas as you learn them to visualize your completion rate as a percentage. Category-specific progress helps prevent biased learning.
Check off formulas as you learn them. Completion rates are shown by percentage, with per-category tracking to keep your studying well-rounded.

■ Search
Search across formula names and descriptions in real time, with matching text highlighted.

■ Dark Mode
Switch with one tap to reduce eye strain during nighttime study sessions.

■ Font Size
Adjustable to three settings: small, medium, and large. Comfortable viewing on any screen size.
Choose from three sizes—small, medium, or large—for a comfortable reading experience on any device.

[Who This App Is For]
・Anyone preparing for the QC Level 3 exam
・Those building a foundation in statistics
・Professionals in manufacturing or quality assurance
・Anyone looking to study smarter in short bursts
・Those who prefer studying without carrying a textbook

[Completely Free & Ad-Free]
No ads or in-app purchases. We provide a focused learning environment.

[Data Storage]
Save your favorites, progress, and settings in the cloud by registering a free account. Your learning data will be preserved even if you change devices or clear your cache.
Create a free account to save your favorites, progress, and settings to the cloud. Your data stays intact even if you switch devices or clear your cache.

We're here to support everyone working toward QC certification. Study smart and get a passing score.

What’s new

Minor bug fixes.