inferential statistics testing

• What part of research methods do students often dread?

  Inferential statistics
• Why are statistics questions valuable in exams?

  They offer high points for little writing
• What is the only statistical test students need to calculate for AQA?

  The sign test
• What should students know about the other seven statistical tests?

  Only their names and when to use them
• What is the purpose of inferential statistics?

  • Generalizes results beyond the sample
  • Makes inferences about the target population
  • Assesses confidence in data supporting inferences
• What probability indicates significant results in inferential statistics?

  p is less than 0.05
• What do researchers use to determine if results are significant?

  Statistical tests
• What is the first step in deciding which statistical test to use in an exam?

  Identify if the study is a correlation or test of difference
• What is a correlation in research?

  Measures two covariables for a relationship
• What type of data is collected in independent groups design?

  Independent data
• How is related data defined in repeated measures design?

  Each data point has a related counterpart
• What is the level of measurement for nominal data?

  Categories with no order
• How is interval data characterized?

  Equal differences between data points
• What is the mnemonic phrase to remember the statistical tests?

  Space weather really contains many UFOs chasing small pigs
• What are the statistical tests and their appropriate designs?

  • Pearson's R: Correlation, interval data
  • Chi-squared: Test of difference, nominal data
  • Spearman's Rho: Correlation, ordinal data
  • Unrelated t-test: Test of difference, interval data
  • Wilcoxon: Test of difference, ordinal data
  • Sign test: Test of difference, nominal data
  • Related t-test: Test of difference, interval data
  • Mann-Whitney: Test of difference, ordinal data
• What should you do if the study in the stem is correlational?

  Use tests from the bottom row of the table
• What is the significance of drawing a statistical test table in an exam?

  It helps select the correct test quickly
• What is the maximum time to sketch the statistical test table in an exam?

  30 seconds
• What is required to justify the choice of a statistical test?

  Explain the test type and data levels
• What is the formula for degrees of freedom in a chi-squared test?

  DF = (rows - 1) * (columns - 1)
• What is the only statistical test that requires calculation?

  The sign test
• What is the first step in calculating the sign test?

  Subtract scores from condition B from condition A
• What does 'n' represent in the sign test?

  Number of participants with differences
• What does 's' represent in the sign test?

  Least frequent sign among differences
• What must the calculated value be for data to be significant?

  Equal to or less than the critical value
• What is the significance of a calculated value of 's' being greater than the critical value?

  Data is not significant
• What should you include in your answer when determining significance?

  Calculated value, critical value, hypothesis decision
• What is the significance of having a small sample size in the sign test?

  It increases the chance of non-significant results
• What is the purpose of the tutorial videos on psych boost?

  To help with qualifications and exam preparation
• Who supports psych boost on Patreon?

  Students and teachers
• What is the benefit of supporting psych boost on Patreon?

  Access to bonus resources and tutorials
• What is the main focus of the research methods unit on psych boost?

  Research methods for A-level psychology
• What is the significance of the shout-out to patrons in the video?

  To acknowledge their support for the channel
• What is the final message of the video?

  Thank you for watching