IP Maths Notes (Lower Sec, Year 1-2): 09) Data Handling & Statistics
Download printable cheat-sheet (CC-BY 4.0)24 Nov 2025, 00:00 Z
Want small-group support? Browse our IP Maths Tuition hub. Not sure which level to start with? Visit Maths Tuition Singapore.
Planning a revision session? Use our study places near me map to find libraries, community study rooms, and late-night spots.
Q: What does IP Maths Notes (Lower Sec, Year 1-2): 09) Data Handling & Statistics cover?
A: Construct tables, compute mean/median/mode, interpret box-and-whisker plots, and justify graph choices for IP assignments.
Statistics converts raw data into decisions. Learn how to summarise, display, and interpret data sets with precision.
These notes align with MOE Lower Secondary Mathematics syllabus used in IP pathways (aligned to O-Level Mathematics 4048 foundations).
Status: MOE Lower Secondary Mathematics syllabus (latest release) checked 2025-11-30 - scope unchanged; remains the reference for these lower-sec notes.
Learning targets
- Build frequency tables, cumulative frequency tables, and histograms.
- Compute mean, median, mode, and range (including grouped data estimates).
- Draw and interpret box plots and scatter plots.
- Write commentary sentences that connect statistics to context.
1. Organising data
1.1 Frequency tables
Example: Scores out of 10 - 5, 7, 8, 5, 6, 9, 7.
| Score | Frequency |
| 5 | 2 |
| 6 | 1 |
| 7 | 2 |
| 8 | 1 |
| 9 | 1 |
1.2 Cumulative frequency
Add frequencies progressively to track the number of observations below a threshold. Useful for median estimates in grouped data.
2. Measures of central tendency
- Mean:
