PPT lesson summary · Foundation PPT · CIE Core
Averages PPT lesson summary
Averages PPT lesson — Foundation (CIE Core). These slides walk a lower-secondary class through the key ideas with diagrams and worked examples on screen. This page summarises the teaching points for search and revision; download the PowerPoint for the full lesson, and use the companion worksheet and answers PDFs for independent practice.
Files: foundation-slides-01M65N6NHX4Y1KCMVJRFH9T7ZM.pptx · foundation-8 Averages handout.pdf · foundation-8 Averages handout answers.pdf · free public downloads · diagrams on the slides
Key learning points
- Mean = total ÷ count; median = middle value once ordered; mode = most frequent.
- Range = largest − smallest (a measure of spread, not an average).
- For an even count, median is the mean of the two central values.
Worked example 1 — Mean and median
Data . Mean and median?
Working
Mean = total÷n; median = middle.
Worked example 2 — Mode
Data . Mode?
Working
Most frequent.
Worked example 3 — Mean from frequency
Values 1,2,3 with frequencies 2,3,5. Mean?
Working
Σ(value×freq)/Σfreq.
Full slides and practice PDFs
This page is a short, searchable overview of the PPT lesson for revision and search engines. Download the PowerPoint for classroom teaching, then use the companion worksheet and answers when available.