statistics

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Slide show which clearly explains the concept STATISTICS

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statistics

  1. 1. It is the science which deals with the or The word data means information collection, presentation, analysis figures set of given facts in numerical and interpretation of numerical
  2. 2. Secondary Data The data collected byby someone, Primary Data : : The data collected the other than the investigator, definite plan in mind are investigator himself with a are known as secondary primary data known as data
  3. 3. Putting thecondenseraworiginal tables,orin An arrangement of the form ofclassesare groups. in We data obtained in numerical data called The may data, in data into form occurs is The number of times an observation condensed or descendingknown ofpresentation is ascending form, is knownorder asmagnitude, of Suchits presentation is as the grouped data ungrouped data called a frequency data an array called
  4. 4. A frequency distribution in which each upper limit as A frequency distribution in which each upper limit well as lower limit isand lower limit is included of class is excluded included
  5. 5. Any character which is capable of taking several different values is called a variable Each group into the raw data is condensed, is called class interval The difference between the true upper limit and the true lower limit of a class
  6. 6. Upper limit + lower limit 2 The difference between the maximum value and the minimum value of the variate
  7. 7. The cumulative frequency corresponding to a class is the sum of all frequencies up to and including that class
  8. 8. sum of observations Mean = number of observations

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