What will happen to the result? Edit
It will produce vast amount of data. In both numerate and descriptive form. The data will be said as "raw" or unprocessed data. The data has not been analyzed or presented in ways that will assist business decisions making. Once, the data has been processed and been through the stages, the data will be "information" that can be used.
Presentation of data Edit
- Bar Charts
- Width equal, height varying to represent relative values. 3 types of bar charts are simple bar chart, percentage bar chart, component bar chart.
- Area of each bar represents the relative values. When interval width increases, the height of the bar must be reduced. There is also no gap between bar.
- Line Graphs
- Showing changes in a variable over time – time-series graphs.
- To display data that need to be presented in such way that the proportions of the total are clearly shown.
Appropriateness of methods of presentation: Edit
|Method of presentation||Most useful for|
Analysing each results: Edit
3 types of average calculation: Edit
- Calculated by totalling all the results and dividing by the number of results
- The value that occurs most in a set of a data
- The value of the middle item when data have been ordered or ranked. it divides the data into two equal parts
Frequency Data Edit
Grouped Frequency Data – used when what is being measure is not a whole number, but a range of possible responses.
The spread/dispersion of data Edit
- The range
- Range is the difference between the highest and lowest value
- The inter-quartile range
- Inter-quartile range is the range of the middle 50% of the data