Q1
What does a pictograph use?
APictures or symbols with a key
BOnly numbers
COnly bars
DOnly words
ICSEClass 7 (ICSE)MathematicsCh 20 · Topic 1
Data Handling (Including Pictograph, Bar Graph)
Data handling involves collecting, organising, and representing data using tools like pictographs and bar graphs to make information easier
Core concept
A pictograph uses pictures or symbols to represent data, with a key explaining what each symbol represents.
How it works
A bar graph uses bars of different heights to compare quantities across categories, with clear titles and labelled axes.
Why it matters
We calculate the mean (average) of a dataset by adding all values and dividing by the number of values.
Key detail
Data handling skills help us interpret information from surveys, experiments, and real-world statistics accurately.
Exam highlight
Key diagram
Keywords worth remembering
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Quick notes
• Data handling collects, organises, represents data.
• A pictograph uses pictures with a key.
• A bar graph uses bars to compare categories.
• Bar graphs need titles and labelled axes.
• Mean is calculated by adding values and dividing by count.
• This gives the average value.
• Data handling helps interpret surveys.
• It applies to real-world statistics.