Statistics
Class 10 · Mathematics
3 ideas in Class 10 Mathematics, explained in plain words, with games and quizzes to practise.
Grouped Data and Mean
Part of: Grouped Data and Mean
Grouped data represents observations using class intervals and frequencies. Class marks stand for interval values; direct, assumed-mean and step-deviation methods estimate the mean.
Why it matters. Statistics summarises large data sets so people can compare groups and understand typical values.
Try it in two minutes
- Identify whether data is individual or grouped.
- Choose mean, median or mode based on the question.
- Check whether the method gives an exact value or an estimate.
Try at home. Collect a small set of repeated daily observations and compare its mean, middle value and most common value.
Median, Mode and Cumulative Frequency
Part of: Median, Mode and Cumulative Frequency
For grouped data, the median class contains the middle observation based on cumulative frequency. The modal class has greatest frequency; ogives graph cumulative frequencies.
Why it matters. Statistics summarises large data sets so people can compare groups and understand typical values.
Try it in two minutes
- Identify whether data is individual or grouped.
- Choose mean, median or mode based on the question.
- Check whether the method gives an exact value or an estimate.
Try at home. Collect a small set of repeated daily observations and compare its mean, middle value and most common value.
Interpreting Measures of Central Tendency
Part of: Interpreting Measures of Central Tendency
Mean, median and mode describe different features of a distribution. Select the measure that matches the question and recognise the assumptions of grouped-data estimates.
Why it matters. Statistics summarises large data sets so people can compare groups and understand typical values.
Try it in two minutes
- Identify whether data is individual or grouped.
- Choose mean, median or mode based on the question.
- Check whether the method gives an exact value or an estimate.
Try at home. Collect a small set of repeated daily observations and compare its mean, middle value and most common value.
What your child will practise
- Grouped Data and Mean: Jungle Quick Fire (Quick Fire)
- Grouped Data and Mean: Space Puzzle (Clue Puzzle)
- Interpreting Measures of Central Tendency: Candy Quick Fire (Quick Fire)
- Interpreting Measures of Central Tendency: Number Sort (Sort It Out)
- Median, Mode and Cumulative Frequency: Mission Control Quest (Match It Up)
- Quiz: Grouped Data and Mean (8 questions)
- Quiz: Interpreting Measures of Central Tendency (8 questions)
- Quiz: Median, Mode and Cumulative Frequency (8 questions)