A
chart is a graphical representation of
data, in which "the data is represented by
symbols, such as bars in a
bar chart, lines in a
line chart, or slices in a
pie chart".[SUP]
[1][/SUP] A chart can represent
tabular numeric data,
functions or some kinds of qualitative structures.
The term "chart" as a graphical representation of
data has multiple meanings:
- A data chart is a type of diagram or graph, that organizes and represents a set of numerical or qualitative data.
- Maps that are adorned with extra information for some specific purpose are often known as charts, such as a nautical chart or aeronautical chart.
- Other domain specific constructs are sometimes called charts, such as the chord chart in music notation or a record chart for album popularity.
Charts are often used to ease understanding of large quantities of data and the relationships between parts of the data. Charts can usually be read more quickly than the raw data that they are produced from. They are used in a wide variety of fields, and can be created by hand (often on
graph paper) or by computer using a
charting application. Certain types of charts are more useful for presenting a given data set than others. For example, data that presents
percentages in different groups (such as "satisfied, not satisfied, unsure") are often displayed in a
pie chart, but may be more easily understood when presented in a horizontal
bar chart.[SUP]
[2][/SUP] On the other hand, data that represents numbers that change over a period of time (such as "annual revenue from 1990 to 2000") might be best shown as a
line chart.
cc:
Kaizer Bishanga mimisa big up mamito kwa kibuti na unaonekana upo makini kijana anaweweseka tu
