Q1
What does a frequency distribution show?
AHow many values fall into each range
BOnly the largest value
COnly the smallest value
DNothing useful
ICSEClass 9 (ICSE)MathematicsCh 18 · Topic 1
Statistics
Statistics involves collecting, organising, presenting, and analysing data using tools like frequency distributions, graphs, and measures of
Core concept
A frequency distribution table organises data into class intervals, showing how many values fall into each range.
How it works
Graphical representations, like histograms and frequency polygons, visually display data distributions for easier interpretation.
Why it matters
Measures of central tendency, like mean, median, and mode, summarise data with a single representative value.
Key detail
Understanding statistics helps us interpret data from surveys, experiments, and real-world situations, drawing meaningful conclusions.
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Quick notes
• A frequency distribution organises data into intervals.
• It shows how many values fall into each range.
• Histograms display data distributions visually.
• Frequency polygons also show distributions.
• Mean, median, mode are central tendency measures.
• They summarise data with one value.
• Statistics helps interpret surveys and data.
• This leads to meaningful conclusions.