Statistics Tutor: A-Level, IB, AP Statistics and University

Statistics is taught differently from the rest of maths and students often find it slippery: the calculations are easy but the questions ask for interpretation, and the interpretation has to be worded exactly right. Which test to use, what the hypotheses are, what a p-value actually means, how to state a conclusion “in context” — these are the marks students lose, and they are rarely taught explicitly at school.

Mr. Ahmad’s statistics lessons teach the logic behind each technique as well as the calculation, so the student can choose the right method and explain the result. Calculator and technology skills are taught properly, since modern statistics exams expect them, and every lesson uses questions from the student’s own course, whether that is the A-Level large data set, an IB AI HL hypothesis test or an AP Statistics free-response question.

Topics covered

• Descriptive statistics: measures of location and spread, box plots, histograms, outliers
• Probability: conditional probability, Venn and tree diagrams, independence
• Random variables and distributions: binomial, normal, Poisson, geometric, uniform
• Sampling and sampling distributions, the central limit theorem, confidence intervals
• Hypothesis testing: z, t, chi-squared, binomial and correlation tests, p-values, errors
• Correlation and regression, including interpreting output from calculators and software

Frequently asked questions