This exam tips covers Exam Tips for Frequency Tables within Frequency Tables for GCSE Mathematics. Revise Frequency Tables in Statistics for GCSE Mathematics with 11 exam-style questions and 20 flashcards. Use this page as part of a wider topic revision path rather than treating it as an isolated fact. It is section 6 of 8 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Exam Tips for Frequency Tables
- Always check totals - frequency column should add up to total number of data values
- Use tally marks correctly - groups of 5 with the 5th mark crossing the first 4
- Choose appropriate class widths - usually 5, 10, or another round number
- Be careful with inequalities - understand ≤ and < symbols for grouped data
- Label clearly - include units and clear headings
- Modal class vs mode - modal class is a range, mode is a single value
- Show working - especially when calculating from frequency tables
Practice questions for Frequency Tables
The table below shows the number of books read by students in a month: | Books read | Frequency | |---|---| | 0 | 4 | | 1 | 7 | | 2 | 11 | | 3 | 6 | | 4 | 2 | What is the mode?
Explain why the mean calculated from a grouped frequency table is described as an 'estimate' rather than an exact value.
Quick recall flashcards
What is class width?
Class width is the size of each interval in a grouped frequency table.
Example: In 10-19, 20-29, 30-39
Class width = 10
What is frequency?
Frequency is the number of times each value or category appears in a dataset. It shows how often something occurs.