Author: dedoc

Normal Distribution

Imagine you measure something from lots of people — like height, shoe size, exam scores, reaction time. Most people will be somewhere in the middle, and fewer people will be very high or very low. If you draw that on a graph, you get a bell shape. That’s the normal distribution. 🧠 The idea in […]

Chi-squared Distribution: Worked Example

📊 Understanding the Chi‑Squared Test: A Complete Worked ExampleThe Chi‑Squared (χ²) test is a simple but powerful method for analysing categorical data. It helps determine whether differences in your data are meaningful or simply due to chance. 🔍 What Does the Chi‑Squared Test Do?The Chi‑Squared test compares: 📁 ScenarioYou want to test whether DNA (Did […]

Breakthrough

The 3D figure standing triumphantly atop the tallest red bar in a chart represents: This image could be used to illustrate:

Green Check Mark

The 3D figure giving a thumbs-up beside a large green check mark visually represents approval, correctness, and compliance — all central to quality assurance. In Lean Six Sigma terms, this image can symbolise:

Decision Points

🧭 Lean Six Sigma: Choosing the Right Path to Process Excellence Every organisation reaches a moment where two paths diverge. One leads to clarity, flow, and predictable performance. The other leads to delays, rework, and frustration. The image of two figures walking in opposite directions captures this perfectly — a decision point, a moment where […]

Double-Declining Balance method

The fixed-declining balance method computes depreciation at a fixed rate. The double-declining balance method computes depreciation at an accelerated rate. Depreciation is highest in the first period and decreases in successive periods