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.

Foundation skills

  1. T.1
    More or less likely

Year 1 skills

  1. X.1
    More, less and equally likely
  2. X.2
    Certain, probable, unlikely and impossible

Year 2 skills

  1. V.1
    More, less and equally likely
  2. V.2
    Certain, probable, unlikely and impossible

Year 3 skills

  1. W.1
    Certain, probable, unlikely and impossible
  2. W.2
    Combinations

Year 4 skills

  1. Q.1
    More, less and equally likely
  2. Q.2
    Certain, probable, unlikely and impossible
  3. Q.3
    Identify independent and dependent events
  4. Q.4
    Combinations

Year 5 skills

  1. S.1
    Understanding probability
  2. S.2
    Find the probability
  3. S.3
    Make predictions
  4. S.4
    Identify independent and dependent events
  5. S.5
    Combinations
  6. S.6
    Find the mode

Year 6 skills

  1. DD.1
    Calculate the mean
  2. DD.2
    Calculate the median
  3. DD.3
    Calculate the mode
  4. DD.4
    Calculate the range
  5. DD.5
    Interpret charts to find the mean
  6. DD.6
    Interpret charts to find the median
  7. DD.7
    Interpret charts to find the mode
  8. DD.8
    Interpret charts to find the range
  9. DD.9
    Mean, median, mode and range: find the missing number
  10. EE.1
    Combinations
  11. EE.2
    Probability of one event
  12. EE.3
    Make predictions
  13. EE.4
    Experimental probability
  14. EE.5
    Probability of opposite, mutually exclusive and overlapping events
  15. EE.6
    Identify independent and dependent events

Year 7 skills

  1. Z.1
    Calculate mean, median, mode and range
  2. Z.2
    Interpret charts to find mean, median, mode and range
  3. Z.3
    Mean, median, mode and range: find the missing number
  4. Z.4
    Changes in mean, median, mode and range
  5. Z.5
    Identify an outlier
  6. Z.6
    Identify an outlier and describe the effect of removing it
  7. Z.7
    Measures of centre and spread
  8. Z.8
    Identify representative, random and biased samples
  9. AA.1
    More, less and equally likely
  10. AA.2
    Probability of simple events
  11. AA.3
    Probability of opposite, mutually exclusive and overlapping events
  12. AA.4
    Experimental probability
  13. AA.5
    Make predictions
  14. AA.6
    Identify independent and dependent events

Year 8 skills

  1. Z.1
    Calculate mean, median, mode and range
  2. Z.2
    Interpret charts to find mean, median, mode and range
  3. Z.3
    Mean, median, mode and range: find the missing number
  4. Z.4
    Changes in mean, median, mode and range
  5. Z.5
    Identify an outlier
  6. Z.6
    Identify an outlier and describe the effect of removing it
  7. Z.7
    Identify representative, random and biased samples
  8. AA.1
    Probability of simple events
  9. AA.2
    Probability of opposite, mutually exclusive and overlapping events
  10. AA.3
    Find probabilities using two-way frequency tables
  11. AA.4
    Experimental probability
  12. AA.5
    Make predictions
  13. AA.6
    Compound events: find the number of outcomes
  14. AA.7
    Identify independent and dependent events
  15. AA.8
    Probability of independent and dependent events
  16. AA.9
    Counting principle

Year 9 skills

  1. Y.1
    Theoretical probability
  2. Y.2
    Experimental probability
  3. Y.3
    Find probabilities using two-way frequency tables
  4. Y.4
    Compound events: find the number of outcomes
  5. Y.5
    Identify independent and dependent events
  6. Y.6
    Probability of independent and dependent events
  7. Z.1
    Calculate mean, median, mode and range
  8. Z.2
    Interpret charts to find mean, median, mode and range
  9. Z.3
    Mean, median, mode and range: find the missing number
  10. Z.4
    Quartiles
  11. Z.5
    Identify biased samples

Year 10 skills

  1. II.1
    Theoretical probability
  2. II.2
    Experimental probability
  3. II.3
    Find probabilities using two-way frequency tables
  4. II.4
    Find conditional probabilities using two-way frequency tables
  5. II.5
    Compound events: find the number of outcomes
  6. II.6
    Identify independent and dependent events
  7. II.7
    Probability of independent and dependent events
  8. II.8
    Geometric probability
  9. JJ.1
    Mean, median, mode and range
  10. JJ.2
    Calculate quartiles and interquartile range
  11. JJ.3
    Identify representative, random and biased samples
  12. JJ.4
    Mean absolute deviation
  13. JJ.5
    Variance and standard deviation
  14. KK.11
    Outliers in scatter plots

Year 11 skills

  1. GG.1
    Introduction to probability
  2. GG.2
    Theoretical and experimental probability
  3. GG.3
    Compound events: find the number of outcomes
  4. GG.4
    Calculate probabilities of events
  5. GG.5
    Factorials
  6. GG.6
    Permutations
  7. GG.7
    Counting principle
  8. GG.8
    Permutation and combination notation
  9. GG.9
    Find probabilities using permutations and combinations
  10. GG.10
    Find probabilities using two-way frequency tables
  11. GG.11
    Identify independent events
  12. GG.12
    Probability of independent and dependent events
  13. GG.13
    Geometric probability
  14. GG.14
    Find conditional probabilities
  15. GG.15
    Independence and conditional probability
  16. GG.16
    Find conditional probabilities using two-way frequency tables
  17. GG.17
    Find probabilities using the addition rule
  18. GG.18
    Find probabilities using the normal distribution
  19. HH.1
    Mean, median, mode and range
  20. HH.2
    Quartiles
  21. HH.3
    Identify biased samples
  22. HH.4
    Mean absolute deviation
  23. HH.5
    Variance and standard deviation

Year 12 skills

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