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Presentation of data — Statistics STD 11 Commerce — Question

Gujarat BoardEnglish MediumSTD 11 CommerceStatisticsPresentation of data3 Marks
Question
Write a short note on two dimensional diagrams.
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Answer

  • When the volume of the data is large then considering both length and breadth, a diagram drawn is called two dimensional diagram.
  • In two dimensional diagrams the total value is shown as an area.
  • Square, rectangle, circle, pie diagram are two dimensional diagrams.
  • Circle diagram: When the volume of the data regarding two or more places, things or times is large, then circle diagrams are drawn for such data.
  • In circle diagram, square roots of the volume of different data are taken as the radius of circle.
  • Arranging the radius in ascending or descending order, circles are drawns with centers on the same line at equal distance from each other.
  • When the data on time are given then circles are drawn in order of time only.
  • If the square root of the volume is too large, then divide by a constant and Lf it is too small then multiply by a constant. In this manner determine the radius.
  • Pie diagram : If the data on different places, things or times consist of several mutually related sub - data are numerically large, pie diagram is drawn.
  • In this diagram, the total volume of the data is represented by a circle of suitable radius and this circle is divided into sectors in accordance with sub - data.
  • Here, total volume of the data is taken as 360° and the volume of sub-data are expressed in terms of measures of angle and are presented on circle with respective circular sectors.

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