Edexcel · GCSE

Your journey to excellence inStatistics

By Revision Genie

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Defining Hypotheses

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Planning Data Collection

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Constraints in Data Collection

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Processing and Representing Data

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Interpreting Results in Context

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Evaluating Statistical Work

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Qualitative and Quantitative Data

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Discrete and Continuous Data

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Categorical and Ordinal Data

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Primary and Secondary Data

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Bivariate and Multivariate Data

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Population and Sample Frames

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Random Sampling Techniques

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Systematic and Quota Sampling

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Stratified Sampling

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Judgement and Opportunity Sampling

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Bias in Sampling

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Questionnaires and Surveys

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Experiments and Observations

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Data Cleaning Techniques

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Dealing with Missing Data

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Controlling Extraneous Variables

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Bar Charts and Pie Charts

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Stem and Leaf Diagrams

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Scatter Diagrams

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Frequency Polygons

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Cumulative Frequency Graphs

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Box Plots

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Histograms

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Population Pyramids

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Mean, Median, and Mode

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Geometric and Weighted Means

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Choosing the Appropriate Average

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Comparing Data Sets with Averages

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Range and Interquartile Range

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Percentiles and Interpercentile Range

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Standard Deviation

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Identifying and Interpreting Outliers

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Comparing Data Sets with Spread

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Probability Scales and Likelihood

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Experimental and Theoretical Probability

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Relative and Absolute Risk

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Independent and Mutually Exclusive Events

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Conditional Probability

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Tree Diagrams and Venn Diagrams

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Identifying Trends

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Moving Averages

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Seasonal and Cyclic Trends

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Trend Line Interpretation

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Retail Price Index (RPI)

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Consumer Price Index (CPI)

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Gross Domestic Product (GDP)

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Percentage Change Calculations

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Interpreting Rates of Change

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Positive and Negative Correlation

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Causation vs Association

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Line of Best Fit

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Spearman’s Rank Correlation

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Interpolation and Extrapolation

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Graphical Misrepresentation

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Bias in Data Collection

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Evaluating Statistical Conclusions

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Communicating Findings Clearly

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