Probability and statistics

Here is a list of all of the skills that cover probability and statistics! These skills are organised by year, and you can move your mouse over any skill name to preview the skill. To start practising, just click on any link. IXL will track your score, and the questions will automatically increase in difficulty as you improve!

Here is a list of all of the skills that cover probability and statistics! To start practising, just click on any link.

Year 13 skills

  1. Q.1 Introduction to probability
  2. Q.2 Calculate probabilities of events
  3. Q.3 Combinations and permutations
  4. Q.4 Find probabilities using combinations and permutations
  5. Q.5 Find probabilities using two-way frequency tables
  6. Q.6 Identify independent events
  7. Q.7 Find conditional probabilities
  8. Q.8 Independence and conditional probability
  9. Q.9 Find conditional probabilities using two-way frequency tables
  10. Q.10 Find probabilities using the addition rule
  11. R.1 Identify discrete and continuous random variables
  12. R.2 Write a discrete probability distribution
  13. R.3 Graph a discrete probability distribution
  14. R.4 Expected values of random variables
  15. R.5 Variance of random variables
  16. R.6 Standard deviation of random variables
  17. R.7 Write the probability distribution for a game of chance
  18. R.8 Expected values for a game of chance
  19. R.9 Choose the better bet
  20. R.10 Find probabilities using the binomial distribution
  21. R.11 Mean, variance and standard deviation of binomial distributions
  22. R.12 Find probabilities using the normal distribution I
  23. R.13 Find probabilities using the normal distribution II
  24. R.14 Find z-values
  25. R.15 Find values of normal variables
  26. R.16 Distributions of sample means
  27. R.17 The Central Limit Theorem
  28. R.18 Use normal distributions to approximate binomial distributions
  29. S.1 Identify biased samples
  30. S.2 Variance and standard deviation
  31. S.3 Identify an outlier
  32. S.4 Identify an outlier and describe the effect of removing it
  33. S.5 Outliers in scatter plots
  34. S.6 Match correlation coefficients to scatter plots
  35. S.7 Calculate correlation coefficients
  36. S.9 Interpret regression lines
  37. S.10 Analyse a regression line of a data set
  38. S.11 Analyse a regression line using statistics of a data set
  39. S.12 Find confidence intervals for population means
  40. S.13 Find confidence intervals for population proportions