A-Level Statistics Revision Guides
A-Level Maths
A-Level Statistics Revision Guides
An Explanation Guide and a Practice Guide for A-Level Statistics, used across exam boards.
- A-Level
- All boards
- 5 areas
The Explanation Guide sets out how each method works, step by step. The Practice Guide holds the questions with their answers and worked solutions, which is the part worked in three passes.
The two guides
Digital PDF, sent to the email address on your order.
The subject
Statistics is the other applied half of A-Level Maths. It covers sampling, presenting and interpreting data, probability, discrete and continuous distributions, correlation and regression, and hypothesis testing.
The 3-step active recall method
Re-reading notes is a futile process when your aim is to remember the information and successfully apply it in exam settings. Active recall is the method you use to ensure the information sticks for a long period of time.
But even active recall can be futile unless you have a structured way of implementing it. This is where the 3-step active recall method comes in, a structured method that is signature to the Levo Learning guides.
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Step 1
Answer up to 10 questions cold, closed book, even if you are unsure on the topic.
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Step 2
Answer the same questions again, but open book. Write the correct answer down even if it seems pointless.
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Step 3
Repeat as step 1 and answer the questions closed book again.
Worked through the Practice Guide, one set of questions at a time.
Memorisation, then application
Marks are given for applying content to the question that has been set, which cannot happen while the content is still being looked up. Step 1 shows what is actually held.
Step 2 puts the correct wording in front of you while the gap is still fresh. Step 3 repeats the cold test, and the difference between the first and third attempt is the part that has moved.
In maths the same applies to method. The steps of a technique have to be produced without the worked solution in front of you before an unfamiliar question can be attempted.
What is covered
Open an area to see the methods inside it.
Statistical sampling3 methods
- Stratified sampling
- Stratified sampling worked backwards
- Systematic sampling
Data presentation and interpretation7 methods
- Mean and standard deviation from a frequency table
- Median and quartiles of grouped data by interpolation
- Identifying outliers by the 1.5 x IQR rule
- Linear coding of data
- Histograms with unequal class widths
- Box plots, outliers and whiskers
- Correlation and regression
Probability3 methods
- Probability of two events (union, conditional, independence)
- Probabilities from a two-way table
- Two-stage selection without replacement
Statistical distributions7 methods
- Discrete random variable (distribution, mean, variance)
- Discrete uniform distribution
- Binomial distribution
- Normal distribution
- Inverse normal: finding a value from a probability
- Finding the mean and standard deviation of a normal distribution
- Normal approximation to the binomial
Statistical hypothesis testing5 methods
- Binomial hypothesis test (one-tailed)
- Binomial hypothesis test (two-tailed)
- Critical region and actual significance level
- Hypothesis test for the mean of a normal distribution
- Hypothesis test for zero correlation
Questions
What is in the A-Level Statistics guides?
Two guides. The Explanation Guide works through each method step by step.
The Practice Guide holds questions with answers and full worked solutions. Between them they cover 5 areas of statistics.
Which exam board are the Statistics guides for?
A-Level Maths content is common across the main boards, so the guides are used with AQA, Edexcel, OCR and MEI alike.
How do I use active recall with maths?
Work the Practice Guide in three passes. Attempt up to 10 questions closed book, work the same questions again with the solutions open and write the correct working down, then attempt them closed book again.