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 Understanding statistics

Statistical Language helps you to understand a range of statistical concepts and terms with simple explanations.

Find concept definitions: Statistical Language Glossary
Explore a concept: What are Data? - Data unit - Data item (variable) - Observation - Dataset Quantitative and Qualitative Data - Quantitative data - Qualitative data What are Variables? - Variable (data item) - Numeric - Continuous - Discrete - Categorical - Ordinal - Nominal What is a Population? - Population Census and Sample - Census - Sample - Random (probability) sample - Non-random (non-probability) sample Data Sources - Direct/Primary data - Survey - Indirect/Secondary data - Administrative data Describing Frequencies - Absolute frequency - Relative frequency - Ratio - Rate - Proportion Frequency Distribution - Frequency distribution - Histogram - Bar chart Measures of Shape - Measures of shape - Normal distribution - Skewness Measures of Central Tendency - Mode - Median - Mean - Outlier Measures of Spread - Range - Quartiles - Interquartile range - Variance - Standard deviation Types of Error - Sampling error - Non-sampling error Measures of Error - Standard error (SE) - Relative error (RE) - Confidence interval What are Statistics? - Descriptive (summary) statistics - Inferential statistics What are Standards? - Statistical standard - Classification What is Metadata? - Metadata Data Visualisation - Static - Dynamic - Interactive Time Series Data - Original time series - Seasonally adjusted time series - Trend series Estimate and Projection - Estimate - Projection Correlation and Causation - Correlation - Causation (Causality) Confidentiality - Confidentiality

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