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Graphic presentation of data

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there are different types of Graphs which is used in the biostatistical study, they are useful methods in presenting simple statistical data. Diagrams are better retained in the memory than statistical tables.

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Graphic presentation of data

  1. 1. M.G. COLLEGE ARMORI B.SC. III SEM- VI TOPIC- FREQUENCY TABLE AND GRAPH BY: PROF. S.B. KUMRE
  2. 2. FREQUENCY DISTRIBUTION AND DATA: TYPES, TABLES, AND GRAPHS • Frequency distribution in statistics provides the information of the number of occurrences (frequency) of distinct values distributed within a given period of time or interval, in a list, table, or graphical representation. Grouped and ungrouped are two types of frequency distribution. • Data is a collection of numbers or values and it must be organized for it to be useful.
  3. 3. PRESENTATION METHODS OF STATISTICAL DATA • 1. TABULATION: • Tables are devices for presenting data simply from masses of statistical data. Tabulation is the first step before data is used for analysis. Tabulation can be in form of simple tables or frequency distribution table (i.e., Data is split into convenient groups). • 2. CHARTS AND DIAGRAMS: • They are useful methods in presenting simple statistical data. Diagrams are better retained in the memory than statistical tables.
  4. 4. THE METHODS USED ARE: (A) BAR CHARTS: They are merely a way of presenting a set of numbers by the length of a bar. The bar chart can be simple, multiple or component type.
  5. 5. (B) HISTOGRAM: It is a pictorial diagram of frequency distribution. It consists of a series of blocks. The class intervals are given along the horizontal axis and the frequencies along the vertical axis.
  6. 6. (C) LINE DIAGRAM: Line diagram are used to show the trend of events with the passage of time
  7. 7. (D) PIE CHARTS: Instead of comparing the length of a bar, the areas of segments of a circle are compared. The area of each segment depends upon the angle.
  8. 8. (E) FREQUENCY POLYGON: A frequency distribution may be represented diagrammatically by the frequency polygon. It is obtained by joining the mid-points of the histogram blocks.
  9. 9. THANK YOU

there are different types of Graphs which is used in the biostatistical study, they are useful methods in presenting simple statistical data. Diagrams are better retained in the memory than statistical tables.

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