STATISTICS

• Statistics

  A branch of mathematics that deals with the theory & method of collecting, analyzing, presenting, and interpreting data
• Main divisions in the science of statistics


  • Descriptive statistics
  • Inferential statistics
• Descriptive statistics


  Refers to the collection, organization, presentation, computation, & interpretation of data in order to describe the samples under investigation
• Inferential statistics


  A STATISTICAL TOOL that seeks to give information linferences or implications pertaining to the posulation b studying its representative samples
• Population


  The TOTALITY OF OBJECTS, INDIVIDUALS, Or reACTIONS, which have common observable charactenistics
• Sampling method


  The method of getting a small but representative cross-section Of the population. This representative part is called the sample
• VArIABLe-

  variable is on of the basic concepts in statistics. It refers to observable characteristcs or phenomena of a person or object whereby the members of the group or set vary of fiffer From one another..

  Examples of it are WeIGHT, HeIGHTS, SeX , YeAr LeveL, AGe, 10, achievement test scores & others.

  Discrete variables:

  refer to variables that can be obtained through counting like the number of deaths, births, students, and mariges at any given time.

  
  

  continuous variables:

  • can Never Be excAcT no matter what we do in getting the measure ments
• Discrete variables:refer to variables that can be obtained through counting like the number of deaths, births, students, and mariges at any given time.
• continuous variables:

  • can Never Be excAcT no matter what we do in getting the measure ments