data visualisations to compare data:
DESCRIPTION
Data visualisations to compare data:. Types of data visualisations. Data visualisation is a visual representation of data that would normally be hard to understand Displaying data in a visual form adds clarity 4 main ways of using data visualisation: Comparing data - PowerPoint PPT PresentationTRANSCRIPT
Data visualisations to compare data:
Types of data visualisations
• Data visualisation is a visual representation of data that would normally be hard to understand
• Displaying data in a visual form adds clarity• 4 main ways of using data visualisation:– Comparing data– Showing distributions of data– Showing relationships between data– Showing the composition of data
Types of data visualisations
• Data visualisations to compare data:• Tools to compare data:– Charts– Data list– Line chart or histogram
• Data visualisations to show distribution of data– Histogram, shows how data has changed over a
timeframe, eg. Hrs, days, months, yrs– Line histogram– Scatter charts
Histogram
Data visualisations to show relationships between data: Scatter chart
Data visualisations to show relationships between data: bubble chart
Sources of authentic data• Primary source data, directly acquired from the source• Secondary source data is an interpretation of a
primary event or primary source data• Primary source:, obtained through measurement,
data-collection forms, eg. Interviews, direct observation, email
• Secondary source, gathered from the published work of someone else, eg. Books, etc; online databases, internet.
Data Integrity
• Data integrity, the degree to which the data is correct
• Data integrity is important because information is used to make decisions and take actions
• Validating data ensures high data integrity