Cummulative Frequency, Range, IQR | Part 2 | Statistics | O Level IGCSE Math | Math Kahani by ARS

In this video, we learn how to calculate and interpret the **Range, Quartiles, and Interquartile Range (IQR) for grouped data**. This is an important Statistics topic for O Level / IGCSE Mathematics, helping you understand the spread and distribution of data using frequency tables and cumulative frequencies. 🔹 We’ll cover: Understanding grouped data and frequency tables Finding the *Range* from grouped data Constructing and understanding cumulative frequency tables Finding the *Lower Quartile (Q1)* and *Upper Quartile (Q3)* Identifying quartiles using cumulative frequency Calculating the *Interquartile Range (IQR)* Using *IQR = Q3 − Q1* Step-by-step O Level / IGCSE exam-style questions Common mistakes and useful exam tips 📌 *Topic:* Statistics 🎯 *Sub Topic:* Grouped Data – Range, Quartiles & IQR 📖 *Level:* O Level / IGCSE Mathematics 🎓 *Channel:* Math Kahani by ARS *Every concept has a story, let’s solve it together!* #IGCSEMaths #OLevelMaths #Statistics #GroupedData #Range #Quartiles #IQR #InterquartileRange #CumulativeFrequency #MathKahani #ARS