Mathematics
Data & Statistics
Representational
11–13 yrs
Pictograms and tally charts (age 11+)
象形图与计数表（11岁以上）
Description
Construct and interpret frequency tables, bar charts, pie charts, pictograms, and vertical line charts for both categorical and grouped numerical data, choosing appropriate representations for the data type
Mastery Evidence
- Construct a grouped frequency table from raw continuous data, choosing appropriate class intervals
- Draw a pie chart by calculating the angle for each category
- Interpret a bar chart comparing two data sets and draw a conclusion about the difference
Assessment Prompt
When your child collects data for a project, can they choose the right type of chart to display it — and draw it accurately with correct labels and a suitable scale?
