Year 7 / Grade 7 • Daily Maths Drill
Statistics and Probability
Describe data distributions and calculate probabilities in simple experiments.
8 questions • 240-question rotating bank • 30 different sets before a full cycle repeats
8Questions
240Question bank
0Best score
💡 Quick Review
Statistics and Probability
Use centre and spread to summarise data and compare experimental with theoretical probability.
Key ideas
- mean median mode
- range
- data displays
- theoretical probability
- experimental probability
Worked example: 12 successes in 40 trials gives experimental probability 0.3.
Common trap: Experimental probability need not exactly equal theoretical probability.
Key words
distribution — how data are spread
theoretical probability — probability from a model
experimental probability — relative frequency from trials
sample space — all possible outcomes
range — max−min
How to use this drill: review the short notes when learning, then close them on later attempts and practise from memory. The rotating bank delays a full set repeat for 30 attempts on the same browser.