Other Graphs and Charts (Edexcel GCSE Maths): Flashcards
📚Flashcards
Practise the cards
12 cards from this deck
ShowHide
Practise the cards
12 cards from this deck
What is a frequency polygon?
What is a frequency polygon?
A graph that displays frequency data using connected straight lines
What do frequency polygons use instead of bars?
What do frequency polygons use instead of bars?
Connected straight lines
Advantage of frequency polygons over histograms?
Advantage of frequency polygons over histograms?
Can compare multiple datasets without overlapping
How to calculate mid-interval value?
How to calculate mid-interval value?
Add lower & upper bounds, divide by 2
Mid-interval value formula
Mid-interval value formula
What goes on the x-axis of a frequency polygon?
What goes on the x-axis of a frequency polygon?
Mid-interval values
What goes on the y-axis of a frequency polygon?
What goes on the y-axis of a frequency polygon?
Frequencies
How to connect points in frequency polygon?
How to connect points in frequency polygon?
Use straight lines only, never curves
Alternative name for two-way tables?
Alternative name for two-way tables?
Contingency tables
What do two-way tables show?
What do two-way tables show?
Relationships between two categorical variables
Method to find missing values in two-way tables?
Method to find missing values in two-way tables?
Use addition & subtraction with row/column totals
First step when solving two-way tables?
First step when solving two-way tables?
Find rows/columns with only one missing value