Types of Data (Leaving Cert Mathematics): Flashcards
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Definition of data
Definition of data
Info collected to answer questions or solve problems
Definition of statistics
Definition of statistics
Branch of maths: collecting, presenting, analysing data
Definition of numerical data
Definition of numerical data
Data expressed as numbers
Definition of discrete data
Definition of discrete data
Data taking only specific separate values (usually whole numbers)
Definition of continuous data
Definition of continuous data
Data taking any value within a range
Discrete data involves
Discrete data involves
Counting individual items
Continuous data involves
Continuous data involves
Measuring (can be more precise)
Key test: discrete vs continuous data
Key test: discrete vs continuous data
Can this be measured more precisely? If yes→continuous; if no→discrete
Number of students: type of data
Number of students: type of data
Discrete (counting individual items)
Height of students: type of data
Height of students: type of data
Continuous (can be measured to any precision)
Age in years: type of data
Age in years: type of data
Continuous (increases gradually, rounded for convenience)
Discrete data: gaps between values?
Discrete data: gaps between values?
Yes, gaps between possible values