Loading...
Loading...
Averages are fundamental to data analysis. Students must calculate mean, median, mode and range from raw data, frequency tables and grouped data, and understand which average is most appropriate in different contexts.
Our tutors see these errors again and again. Knowing them in advance gives you a head start.
Forgetting to order the data before finding the median
Dividing by the number of groups instead of the total frequency when finding the mean from a table
Using the class boundaries instead of midpoints for grouped frequency means
This topic is tested by the following exam boards. Our tutors are specialists in each one.
Frequency tables organise raw data into categories or class intervals for analysis. Students must construct tables, calculate totals, and use them to find averages and draw statistical diagrams.
StatisticsCumulative frequency diagrams show running totals and are used to estimate the median, quartiles and interquartile range. Students draw the characteristic S-shaped curve and read off values at key percentile positions.
StatisticsBox plots (box-and-whisker diagrams) display the five-number summary of a dataset and are ideal for comparing distributions. Students draw, interpret and compare box plots, calculating the interquartile range and identifying skewness.
Everything you need to know about revising for GCSE Maths in 2026. From building a revision schedule to mastering every topic area, this comprehensive guide covers exam structure, study strategies, and expert tips to maximise your grade.
Exam PreparationA clear guide to the differences between GCSE Maths Foundation and Higher tiers. Understand grade ranges, content differences, and how to make the right choice for your child's target grade and confidence level.
Study TipsA practical, step-by-step guide to improving from a grade 4 to a grade 7 in GCSE Maths. Covers diagnosing weak areas, mastering fundamentals, building exam technique, and knowing when to get expert help.
Take our free diagnostic quiz to find out exactly where you stand, then get matched with a tutor who specialises in statistics.