Data Analysis and Statistical Techniques
Sampling, forecasting, high-low analysis, correlation, regression, time series, expected values, dispersion, visualisation and spreadsheets.
How to study ACCA Applied Knowledge
Learn each principle, practise its application in the computer-based exam format and keep the three independent 50% pass decisions visible.
Core concepts
Concept 1
Sampling methods affect representativeness, cost and bias, so the population and selection process must match the purpose.
Exam cue: Define the population, variable, unit and sampling method before interpreting a result.
Concept 2
Statistical summaries and forecasts describe patterns and uncertainty but depend on controlled definitions, data quality and assumptions.
Exam cue: Show formulas, units and time periods and distinguish association from causation.
Concept 3
Spreadsheets support repeatable analysis when inputs, formulas, references, validation, documentation and outputs are controlled.
Exam cue: Test spreadsheet logic with independent checks and unusual input values.
Risk pitfalls and guardrails
Generalising from a convenient or biased sample.
Guardrail: Do not import a rule, formula or reporting format from memory without checking the period, units, signs, entity and current syllabus scope.
Extending a trend beyond the relevant range without considering structural change.
Guardrail: Do not import a rule, formula or reporting format from memory without checking the period, units, signs, entity and current syllabus scope.
Hiding an input inside a formula so it cannot be reviewed or updated safely.
Guardrail: Do not import a rule, formula or reporting format from memory without checking the period, units, signs, entity and current syllabus scope.
Memory anchors
Random Sample
A random sample gives every population item a known chance of selection.
Expected Value
Expected value weights each possible outcome by its probability.
Correlation
Correlation measures association but does not establish causation.
Regression
Regression estimates a relationship between a dependent variable and one or more drivers.
Spreadsheet Control
Controlled spreadsheets separate inputs, calculations and outputs and make formulas reviewable.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
Every population item has equal selection chance. What sample?
Selecting every 20th invoice after a random start is what?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
What is Pass Harbor?
Completely free exam prep for 247 UK exams.
- Practice questions
- Flashcards
- Study guides
- Mock exams
- No registration
- No paywall
- Start instantly
“No more expensive exam prep. Quality study tools should be accessible to everyone.”