Statistics — Class 9 Maharashtra SSC Mathematics revision notes
A 3-page visual revision sheet for Statistics, written for Class 9 Maharashtra SSC Mathematics. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
What this Statistics sheet covers
- Primary and secondary data
- Frequency
- Range
- Data, and the words for handling it
- Class interval
- Class mark
- Inclusive and exclusive
- Grouping data into classes
- The three averages for ungrouped data
- mean of n values
- mean when values have frequencies
- median position, n odd
- median, n even, the mean of two middles
- the range as a measure of spread
- Mean median mode
- The three averages compared
- All three averages from one list
- Bar graph
- Histogram
- Frequency polygon
- Pie diagram
- The pictures
- A pie diagram sector
- Which average suits which data
- Symbols in this chapter
- Traps that cost marks
- Tricks that save time
How CapCompass uses this sheet
These notes are not a standalone PDF. CapCompass plans Mathematics chapter by chapter against your real exam dates and free hours, and when the plan reaches Statistics the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.