Comparing data (Edexcel GCSE Maths): Flashcards
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Practise the cards
15 cards from this deck
Comparing data definition
Comparing data definition
Analyzing datasets by calculating same stats for each group
Measures of average for comparison
Measures of average for comparison
Mean, median, or mode
Measure of spread for comparison
Measure of spread for comparison
Range
Key requirement for valid data comparison
Key requirement for valid data comparison
Calculate same statistics for all datasets being compared
Visual tool for comparing frequency distributions
Visual tool for comparing frequency distributions
Dual bar charts
Visual tool showing all values for both datasets
Visual tool showing all values for both datasets
Back-to-back stem and leaf diagrams
Step 1 when comparing datasets
Step 1 when comparing datasets
Calculate same statistics for each dataset
Step 2 when comparing datasets
Step 2 when comparing datasets
Write comparison sentences stating higher or lower values
Step 3 when comparing datasets
Step 3 when comparing datasets
Support conclusions with numerical evidence
How to calculate range
How to calculate range
Maximum value minus minimum value
Higher mean interpretation in comparison
Higher mean interpretation in comparison
Better performance on average (context-dependent)
Smaller range interpretation
Smaller range interpretation
More consistent results
Rule about making claims from data
Rule about making claims from data
Only make claims backed by calculated statistics
Datasets with similar statistics
Datasets with similar statistics
Can be similar; don't assume there must be differences
Exam tip for comparison statements
Exam tip for comparison statements
Write one sentence for means, one for ranges