Terminology 2

  • Estimate
    • An idea about a characteristic of a population based on sample data (e.g., the sample mean IQ was 102 so we estimate that the population mean IQ is also 102)
  • Estimator
    • The formula used to take sample data and estimate population data
  • Probability Samples (Representative Samples)
    • The idea that a specific sample represents or possesses the same characteristics as the population. Without a representative sample, we can not estimate a population parameter.