 Algebra and Functions Resource description REPRESENTATION AND SUMMARY OF DATA - LOCATION REPRESENTATION AND SUMMARY OF DATA - DISPERTION Calculating medians and quartiles from discrete and continuous data, including interpolation. Calculating percentiles, variance and standard deviation Standard deviation and variance from grouped data Word worksheet to practice variance and standard deviation S1 Coding REPRESENTATION OF DATA S1 Histograms S1 Skewness and choice of data Skewness and interpreting data Word worksheet to practice interpreting with skewness PROBABILITY S1 Probability - sample space and tree diagrams Word worksheet to match diagrams with correct set notaton S1 Probability and conditional probability S1 Mutually exclusive and independent events CORRELATION AND REGRESSION S1 Correlation Product moment correlation coefficient Correlation spreadsheet Excel spreadsheet to use to show how to calculate correlation coefficient S1 Regression Least squares regression Regression spreadsheet Excel spreadsheet to use to show how to regression equation DISCRETE RANDOM VARIABLES Discrete random variables 1 Introduction to discrete random variables, probability distributions and probability functions Discrete random variables matching worksheet Matching worksheet for probability distributions and functions Discrete random variables 2 Mean and variance of discrete random variables E(X) and Var(X) effects of multiplier and constant Spreadsheet to investigate the effect of multipliers and constants on E(X) and Var(X) Discrete random variables 3 Effect of multipliers and constants on E(X) and Var(X) NORMAL DISTRIBUTION Normal distribution 1 Introduction to the normal distribution and calculating probabilities Normal distribution 2 Calculating values of x, mean and standard deviation given probabilities Normal distribution table Normal distribution function table of probabilities MIXED STARTERS AND KEY POINT WORKSHEETS Mixed starter questions S1 Key points - Measures of location and spread S1 Key points - Correlation and Regression S1 Key points - Probability distributions S1 Key points - Probability, Permutations and combinations