Cumulative frequency diagrams 1 (Edexcel GCSE Statistics): Flashcards
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9 cards from this deck
Find cumulative frequencies for car park data
Find cumulative frequencies for car park data
≤11:8, ≤12:19, ≤13:28, ≤14:34, ≤15:38
Give plot coordinates for the heights example
Give plot coordinates for the heights example
(130,8),(140,24),(150,48),(160,80),(170,100)
How to draw a step polygon for discrete data?
How to draw a step polygon for discrete data?
Horizontal lines constant then vertical jumps at values
What must cumulative frequency never do?
What must cumulative frequency never do?
Never decrease; it only stays same or increases
Plotting rule: continuous vs discrete?
Plotting rule: continuous vs discrete?
Continuous: plot upper bounds join lines; Discrete: steps
Plot type for discrete whole-number data?
Plot type for discrete whole-number data?
Step polygon
Cumulative freq up to 150 cm? (8,16,24,32,20)
Cumulative freq up to 150 cm? (8,16,24,32,20)
48
Where to plot cumulative freq for 130<h≤140?
Where to plot cumulative freq for 130<h≤140?
At upper bound 140
Find cumulative frequency ≤160 cm
Find cumulative frequency ≤160 cm
80 students (8+16+24+32)