Maths Skills (Statistics) (AQA A-Level Business): Flashcards
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Practise the cards
10 cards from this deck
Pie chart: degrees per 1% share
Pie chart: degrees per 1% share
3.6°
Mean calculation formula
Mean calculation formula
Sum of all values ÷ number of values
Median definition
Median definition
Middle value when data arranged in ascending order
Mode definition
Mode definition
Most common/frequently appearing value in dataset
Range formula
Range formula
Largest value - smallest value
Percentage change formula
Percentage change formula
(New figure - Previous) / Previous × 100
Index numbers: base year value
Index numbers: base year value
100
Histogram vs bar chart: key differences
Histogram vs bar chart: key differences
No gaps between bars; area represents value, not just height
Non-zero scale problem in graphs
Non-zero scale problem in graphs
Can create false/misleading impressions of data changes
Confidence interval definition
Confidence interval definition
Range of values showing uncertainty of an estimate