Edexcel S2
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Edexcel S2 Description

If you’ve seen ExamSolutions.net desktop version but want the ease of use on your iPhone or iPad without the adverts but with all the video tutorials then this app is for you or your school. Each app in this series covers the essential topics for the module, presenting them in short video tutorials and explained in a clear mathematical style so as you can progress quickly and smoothly through the topics. There are further supplementary exercises and worked solutions from past papers for you to try, essential to improving your grade. It is like having your own personal tutor but at a fraction of the cost. You can pause, rewind, play again and again and learn at your own pace. Learn on the go or place a video in your favourites to view later. This is a valuable resource that will work side by side with a text book and should help you to get the grade you want, whether you are at school, college or just studying on your own. Module Content Discrete random variables: - Binomial Distribution - Introduction - Formula - Cumulative Probability Tables - For p less than or equal to 0.5 - For p greater than 0.5 - Mean and variance - Exam Questions - Poisson Distribution - Introduction - Changing the mean - Finding an observed value x - Exam Questions Continuous random variables: - Probability Density Functions and Cumulative Distribution Functions - What is a Probability Density Function (p.d.f,)? - Finding the constant k in a p.d.f - Calculating probability from a p.d.f. - The cumulative distribution function, (c.d.f) - Finding the median from a p.d.f. - Finding the mode from a p.d.f. - E(X) and Var(X) - Exam Questions - Continuous Uniform / Rectangular Distribution - The uniform distribution - introduction - Example on defining the pdf, calculating probabilities and quartiles - Expected mean E(X), the variance Var(X), cumulative distribution function F(X) - Proof of E(X) - Proof of Var(X) - Exam Questions Statistical approximations: - Poisson Approximation to the Binomial Distribution - An example for you to try - Exam Questions - Continuity Corrections - Normal Approximation to the Binomial Distribution - Exam Questions - Normal Approximation to the Poisson Distribution - The normal approximation to the Poisson distribution - Exam Questions Estimating and Sampling: - Simple random sampling - What is a statistic? - Distribution of the Sample Mean - Distribution of the Sample Mode and Median Hypothesis tests: - Binomial Distribution - Introduction - Lower tail test - Upper tail test - Critical values - lower tail test - Critical values - upper tail test - Two tailed test - Exam Questions - Poisson Distribution - Test for a Poisson mean - Lower tail test - Upper tail test - Two tailed test - Exam Questions * PLEASE NOTE THAT THIS APP REQUIRES INTERNET CONNECTION TO PLAY VIDEOS.

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