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Personally, I find SEAB-Cambridge getting more and more creative these days. Looking at the recent practical exams, they seem to prefer students to think and perform on the spot. If we look [...]

Many students of mine have asked me this question numerous times. Some lamented that they work really hard, finishing off the revision package timely. However, they still cannot improve from a [...]

So today we discuss about Cluster Sampling. We will begin by looking at cluster sampling with equal probabilities. Firstly, a cluster is a grouping of the members of the population. Previously, [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. Numerical Answers (click the questions for workings/explanation) [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. Numerical Answers (click the questions for workings/explanation) [...]

Let us look at the difference between modal value and expected value. We shall start by saying they are different, albeit close. Modal value refers to the mode, that is, the value that has the [...]

When Mr. Teng retired on 1 January 2018, he put a sum of 500 at the start of each month for groceries. Denote the amount of money that Mr. Teng has at the time years by . (i) The differential [...]

I want to share a question that is really old (older than me, actually). It is from the June 1972 paper. As most students know, Maclaurin’s series was tested in last year A’levels [...]

Question 1 (i) (ii) Using long division, we find that So the asymptotes are and Question 2 (i) This is a hyperbola with centre , asymptotes are , and vertices and . is a graph with asymptotes and [...]