STATISTICS: is the gathering, collection, organizing, analyzing and interpretation of numerical data or information.
DISCRETE DATA: these are data that can be obtained by counting. i.e. cars, houses, books, tables etc.
CONTINUOUS DATA: These are data that can be measured. i.e. length, height, volume etc.
GRAPHICAL: These are data that are collected and represented in pictorial, chart or diagrammatical form. i.e. pie chart, bar chart, histogram, pictogram etc.
CHART: A chart is a graphical representation of data in symbolic form. i.e. bar chart line chart, pie chart etc.
FREQUENCY POLYGON: A frequency polygon is used to display information or data in place of histogram or as an alternative diagram to histogram.
COLLECTION AND PRESENTATION OF DATA
EXAMPLE
In a game of dice, a die was thrown several times; the result of the out- come is shown below:
2, 3, 4, 4, 2, 1, 3, 2, 6, 5, 3, 2, 1, 1,
2, 5, 2, 1, 4, 4, 6, 5, 6, 1, 6, 5, 4, 5,
4, 3, 6, 5, 5, 3, 5,2, 1, 4, 5, 2, 4, 5,
4, 6, 3, 1, 5, 6, 6, 5.
SOLUTION
SCORES | TALLY MARKS | NO. OF OUTCOME |
1 | 1111 11 | 7 |
2 | 1111 111 | 8 |
3 | 1111 1 | 6 |
4 | 1111 1111 | 9 |
5 | 1111 1111 11 | 12 |
6 | 1111 111 | 8 |
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