Bar Diagram - * 1 Dimensional or two dimensional? Height or length = size of data Can measure frequency type and non-frequency type Can represent Discrete data and continuous data Better for non-freq data
Component Bar Diagram – Useful in comparing sizes of different component parts. Helps us understand the relationship between these two. Has two or more components Height is proportionate to size of data
Multiple Bar Diagram – COMPARING TWO OR MORE SETS OF DATA.
Pie Chart – Two Dimensional (2D). Area is proportionally divided among components 100 equal parts of 3.6% each
Geometric Diagram
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Bar Diagram • Simple Bar • Multiple Bar • Component Bar
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Pie Diagram / Chart
Frequency Diagram
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Histogram
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Frequency Polygon
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Frequency Curve
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Ogive (Cumulative Frequency Curve)
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Arithmetic Line Graph (Time Series Graph)
Histogram - 2D / 2 Dimensional figure. Area of rectangles is proportional to frequency if class width is same. Represent continuous data. No space between rectangles. Can be used to find Mode
Frequency Polygon – Plane bounded by lines. Midpoints of rectangles in histogram can be joined to make this. Area under the curve = total frequency or sample size. Grouped data
Frequency Curve - Freehand curve that passes through the points of frequency polygon as closely as possible.
Ogive – Two types – Less than, More than. Grouped. Gives Median.
Arithmetic Line Graph – Time on x-axis, variable along y-axis