Data types and representation Two types of data
- Slides: 13
Data types and representation Two types of data: Discrete Continuous Observations are a finite, countable, number of values Observations can take on any number of the countless number of values in an interval eg. Number of “sixes” after 3 throws of the dice eg. The average IQ of ten random Heads of Department
Data types and representation Types of measurements Nominal Objects are named and assigned to classes eg. male or female Ordinal Objects are either greater, or smaller than, a comparative object eg. finishing positions in a race Ratio level Basic standard interval exists + meaningful zero eg. mass Interval level Basic standard interval is introduced, but no true zero eg. temperature in celsius
Data types and representation Summarising discrete data: Name Eye Colour Janice brown Tom blue Danielle green Ian brown Eduardo brown Emily brown Anja blue Cara brown Adrian brown Eric blue Sarah brown David brown
Data types and representation Summarising discrete data: Frequency tables Eye Colour Frequency Brown 33 Blue 14 Green 3
Data types and representation Summarising discrete data: Frequency tables Eye Colour Frequency Relative Frequency Brown 33 66% Blue 14 28% Green 3 6%
Data types and representation Summarising discrete data: Frequency bar graph
Data types and representation Summarising discrete data: Relative frequency bar graph
Data types and representation Summarising continuous data: Name Hours of Sleep / Night Janice 6 Tom 7. 5 Danielle 10. 5 Ian 9 Eduardo 7 Emily 6 Anja 8 Cara 5 Adrian 8. 5 Eric 6. 5 Sarah 7. 5 David 4
Data types and representation Summarising continuous data: Frequency tables Hours of Sleep Frequency 3 - 4 hrs 1 4 - 5 hrs 3 5 - 6 hrs 6 6 - 7 hrs 14 7 - 8 hrs 16 8 - 9 hrs 5 9 - 10 hrs 3 10 - 11 hrs 2
Data types and representation Summarising continuous data: Frequency bar graph (Histogram)
Data types and representation Summarising continuous data: Relative frequency bar chart
Data types and representation Summarising continuous data: Line graph
Data types and representation Summarising continuous data: Scatter graph
- Data representation types
- 4 bit two's complement
- Two's complement representation
- Binary polynomial division
- Data and program representation
- Data representation and computer arithmetic
- Tabular and graphical representation of data
- Data representation and organization
- Interprocess communication in distributed systems
- Tabular and graphical representation of data
- Xdr external data representation
- Data representation computer science
- Machine level representation of programs
- Information representation