GCSE 2016 Handling Data TGS
Demo
Subtopic
Handling Data
Stem and Leaf
Key
Two way tables
Check totals match
2 variables
(usually gender)
Cumulative frequency
add up frequencies
Box and Whisker Plots
Range & Inter Quartile Range
Median
Lower & Upper Quartile
Min & Max
Questionnaires
Not biased
Biased question or options
Wrong people
Wrong location
Time period, eg per day or month
Response boxes
Complete (more than)
Not overlapping
Data Collection Sheet
Tally & Frequency
Frequency Polygon
Join the points, straight lines
Plot the midpoints
