Leaving Cert Maths - Statistics: Empirical Rule Explained (2024 Exam Question)

In this video, we break down a popular Statistics topic for the Leaving Cert Maths curriculum: the Empirical Rule (also known as the 68-95-99.7 rule). We work through a practical exam-style question from the 2024 Paper 2, focusing on how many hours of sleep 17-year-olds get. You will learn: How to identify the Mean and Standard Deviation from a Bell Curve. How to calculate missing values on the horizontal axis. How to determine percentages for specific data ranges using the Empirical Rule. This is a "must-know" topic for students aiming to pick up easy marks in the Statistics section. Don't forget to like and subscribe for more LC Maths tutorials! Timestamps 00:00 Introduction to the Statistics Question 00:11 What is the Empirical Rule? 01:06 Explaining the Bell Curve and Standard Deviation 02:00 The 68%, 95%, and 99.7% breakdown 03:48 Solving Part (i): Filling in missing numbers 04:24 How to find the Mean and Standard Deviation 06:04 Solving Part (ii): Calculating percentages for 9+ hours of sleep 07:15 Final Answer and Summary Tags Leaving Cert Maths, Junior Cycle Maths, Leaving Cert Statistics, Empirical Rule Maths, 68 95 99.7 Rule, Normal Distribution, Standard Deviation Leaving Cert, Maths Grinds Ireland, LC Maths Paper 2, Leaving Cert 2024 Maths, Bell Curve Explained, Irish Maths Tutorials