Parameter and statistics

• Parameter

  A measure that describes a population, usually denoted by Greek letters (e.g. μ, σ²)
• Statistic


  A measure that describes a sample, usually denoted by Roman letters (e.g. x̄, s²)
• Statistics are estimates of the corresponding parameters
• Parameter

  • 50% of the 24 Philippine senators agreed to support a certain measure
  • The monthly allowance of all Grade 11 female students
  • The average score in the first periodic examination in General Mathematics of his 5 classes
  • The average hours spend on social media of his advisory class
• Statistic


  • A researcher randomly selected 45 employees to study the economic status
  • Fifty students who were randomly selected will participate in a study on the effects of using calculators in learning mathematics
  • The average monthly allowance of 75 pesos from a sample of 50 Grade 11 female students
  • From a random sample of 120 students, the teacher obtains an average score of 84
  • From a random sample of 35 students, he found out that they spend an average of 3 hours per day on social media
• The Philippines consists of 7641 islands
• • 25% of the students in the Philippines reported to have internet connection at home - parameter
• In a survey conducted among 100 students, it was found that 25 had access to the internet at home - statistic
• Sample is a subset of the population under investigation.
• Population is the entire group or set being studied.