Cumulative Frequency (AQA GCSE Maths): Flashcards
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Cumulative frequency definition
Cumulative frequency definition
Running total - adding up frequencies as you move through data
Cumulative frequency plotted against
Cumulative frequency plotted against
Upper boundary of each class interval
Starting point on cumulative frequency graph
Starting point on cumulative frequency graph
Plot zero at lowest value of first class interval
Name of S-shaped cumulative frequency curve
Name of S-shaped cumulative frequency curve
Ogive
How to find median from cumulative frequency graph
How to find median from cumulative frequency graph
Halfway up axis, across to curve, down to read value
Position of lower quartile on cumulative frequency axis
Position of lower quartile on cumulative frequency axis
One-quarter of the way up the axis
Position of upper quartile on cumulative frequency axis
Position of upper quartile on cumulative frequency axis
Three-quarters of the way up the axis
Formula for interquartile range (IQR)
Formula for interquartile range (IQR)
Nature of values from grouped data cumulative frequency graph
Nature of values from grouped data cumulative frequency graph
Estimates, not exact values
Final cumulative frequency value
Final cumulative frequency value
Equals total number of items in dataset