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.

Senior-infants skills

  1. Q.1
    More or less likely

First-class skills

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

Second-class skills

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

Third-class skills

  1. Z.1
    Certain, probable, unlikely and impossible
  2. Z.2
    Mean and mode
  3. Z.3
    Interpret charts to find mean and mode
  4. Z.4
    Combinations

Fourth-class skills

  1. W.1
    Understanding probability
  2. W.2
    Find the probability
  3. W.3
    Make predictions
  4. W.4
    Mean and mode
  5. W.5
    Interpret charts to find mean and mode
  6. W.6
    Combinations

Fifth-class skills

  1. T.1
    Calculate mean, median and mode
  2. T.2
    Mean, median and mode: find the missing number
  3. T.3
    Interpret charts to find mean, median and mode
  4. T.4
    Understanding probability
  5. T.5
    Find the probability
  6. T.6
    Make predictions
  7. T.7
    Combinations

Sixth-class skills

  1. GG.1
    Calculate mean, median, mode and range
  2. GG.2
    Interpret charts to find mean, median, mode and range
  3. GG.3
    Mean, median, mode and range: find the missing number
  4. HH.1
    Combinations
  5. HH.2
    Probability of one event
  6. HH.3
    Make predictions
  7. HH.4
    Probability of opposite, mutually exclusive and overlapping events
  8. HH.5
    Compound events - find the number of outcomes by counting

First-year skills

  1. DD.1
    Calculate mean, median, mode and range
  2. DD.2
    Interpret charts to find mean, median, mode and range
  3. DD.3
    Mean, median, mode and range: find the missing number
  4. DD.4
    Changes in mean, median, mode and range
  5. DD.5
    Identify representative, random and biased samples
  6. EE.1
    Probability of simple events
  7. EE.2
    Probability of opposite, mutually exclusive and overlapping events
  8. EE.3
    Experimental probability
  9. EE.4
    Make predictions
  10. EE.5
    Compound events: find the number of outcomes
  11. EE.6
    Counting principle

Second-year skills

  1. DD.1
    Calculate mean, median, mode and range
  2. DD.2
    Interpret charts to find mean, median, mode and range
  3. DD.3
    Mean, median, mode and range: find the missing number
  4. DD.4
    Changes in mean, median, mode and range
  5. DD.5
    Quartiles
  6. DD.6
    Identify representative, random and biased samples
  7. EE.1
    Probability of simple events
  8. EE.2
    Probability of opposite, mutually exclusive and overlapping events
  9. EE.3
    Experimental probability
  10. EE.4
    Make predictions
  11. EE.5
    Compound events: find the number of outcomes
  12. EE.6
    Counting principle

Third-year skills

  1. FF.1
    Theoretical probability
  2. FF.2
    Experimental probability
  3. FF.3
    Compound events: find the number of outcomes
  4. FF.4
    Identify independent and dependent events
  5. FF.5
    Probability of independent and dependent events
  6. FF.6
    Factorials
  7. FF.7
    Counting principle
  8. GG.1
    Mean, median, mode and range
  9. GG.2
    Quartiles
  10. GG.3
    Identify biased samples
  11. GG.4
    Variance and standard deviation

Transition year skills

  1. FF.1
    Theoretical probability
  2. FF.2
    Experimental probability
  3. FF.3
    Compound events: find the number of outcomes
  4. FF.4
    Identify independent and dependent events
  5. FF.5
    Probability of independent and dependent events
  6. FF.6
    Geometric probability
  7. FF.7
    Factorials
  8. FF.8
    Counting principle
  9. GG.1
    Mean, median, mode and range
  10. GG.2
    Quartiles
  11. GG.3
    Identify biased samples
  12. GG.4
    Mean absolute deviation
  13. GG.5
    Variance and standard deviation

Fifth-year skills

  1. FF.1
    Introduction to probability
  2. FF.2
    Theoretical and experimental probability
  3. FF.3
    Compound events: find the number of outcomes
  4. FF.4
    Calculate probabilities of events
  5. FF.5
    Permutations
  6. FF.6
    Counting principle
  7. FF.7
    Permutation and combination notation
  8. FF.8
    Find probabilities using permutations and combinations
  9. FF.9
    Find probabilities using two-way frequency tables
  10. FF.10
    Identify independent events
  11. FF.11
    Probability of independent and dependent events
  12. FF.12
    Geometric probability
  13. FF.13
    Find conditional probabilities
  14. FF.14
    Independence and conditional probability
  15. FF.15
    Find conditional probabilities using two-way frequency tables
  16. FF.16
    Find probabilities using the addition rule
  17. FF.17
    Expected values of random variables
  18. FF.18
    Write the probability distribution for a game of chance
  19. FF.19
    Expected values for a game of chance
  20. FF.20
    Choose the better bet
  21. FF.21
    Find probabilities using the binomial distribution
  22. GG.1
    Mean, median, mode and range
  23. GG.2
    Quartiles
  24. GG.3
    Identify biased samples
  25. GG.4
    Mean absolute deviation
  26. GG.5
    Variance and standard deviation

Sixth-year skills

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