GRE (Graduate Record Examinations) Psychology Measurement and Methodology-Statistical Procedures Study Material (Page 7 of 25)

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Introduction: Inferential Statistics


Inferential Statistics

While descriptive statistics tell basic information about the population or data set under study, inferential statistics use complex mathematical calculations to infer trends about a larger population based on samples. Inferential statistics derive relationships between variables within a sample, which can then be generalized to make predictions about larger population.

  • Quantitative geography uses inferential statistics as it too costly or time-consuming to study an entire population or spatial domain.…

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Introduction: Functions of Statistics


Functions of Statistics

  • Data collection
  • Data tabulation
  • Data analysis
  • Result interpretation

Types of Data: Primary vs. Secondary Data and Qualitative vs. Quantitative Data


Primary vs. Secondary Data

Primary Data: Primary data is collected directly by an authorized organization, investigator, or enumerator for the first time. It is usually gathered through field research. E. g. , questionnaire filled by certain population sample can be used to co…

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