Unit 1; Research Methods; Correlation

View mindmap
  • Correlation
    • Types of correlation
      • Positive: as 1 co-variable increases, so does the other
      • Negative: as 1 co-variable increases, the other decreases
      • None: no definite trend, no apparent relationship
    • Correlational Hypotheses
      • Two-tailed
        • there will be a correlation but it does not say if positive or negative
      • One-tailed
        • there will be a correlation and direction is given
    • No IV or DV, only co-variables
    • Descriptive stats
      • use scatter graph to show results
        • Can draw broad conclusions
        • can't justify "x affects y", doesn't explain relationship
      • Findings: point to particular values e.g. highest score or range
      • Conclusions: inferences you can make from data
    • Inferential stats
      • Spearman's Rho test calculates 'correlation co-efficient' between -1 & +1
      • Positive correlation
        • will be a +
        • closer to +1, the stronger the correlation
      • Negative correlation
        • will be a -
        • closer to -1, the stronger the correlation
      • No correlation
        • will be near 0
    • Advantages of Correlation Statistics
      • can use old data for research
      • useful for if variables can't be manipulated
      • good starting point, may find random relationship
    • Disadvantageof Correlation Statistics
      • don't tell us anything about cause and effect
      • inferential stats won't always pick up on a relationship


No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all Research methods and techniques resources »