Leaving Cert Maths: How to Calculate a 95% Confidence Interval | LCHL Stats Explained
Автор: Maths Made Easy Grinds
Загружено: 2026-02-09
Просмотров: 14
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Struggling with statistics for the Leaving Cert? In this video, we walk through a past paper question on how to construct a 95% confidence interval for a population mean.
This is a frequent topic in Leaving Cert Higher Level (LCHL) Maths Paper 2. We cover the exact formula you need to memorize (since it isn't in the log tables!) and show you how to plug in the mean score, standard deviation, and sample size to get full marks.
Perfect for 5th and 6th-year students preparing for their exams or mocks. Don't forget to like, subscribe, and share with your classmates!
00:00 Introduction to 95% Confidence Intervals
00:19 Reading the Data Table: Mean, SD, and Sample Size
00:54 Understanding the Question: Country X
01:30 The Confidence Interval Formula Explained
02:04 Step-by-Step Calculation for Country X
02:45 Why You Need to Memorize This Formula
03:00 Visualizing the Margin of Error
Leaving Cert Maths, LCHL, Leaving Cert Higher Level, Project Maths, Ireland, Statistics, Confidence Intervals, 95% Confidence Interval, Margin of Error, Population Mean, Maths Grinds, Junior Cycle, Leaving Cert 2025, Leaving Cert 2026, Paper 2, Exam Preparation, Irish Education
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