Qwizdom year 9 maths - grouped frequency tables
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The document is an interactive quiz about grouped frequency tables containing questions about frequency, cumulative frequency, total frequency, midpoint, median, mode, and what various symbols represent. It asks the learner to identify the meaning of symbols like 'f' and 'Σf', which class contains the median, and which choice indicates there are 25 people total based on the given frequency table.
Qwizdom year 9 maths - grouped frequency tables
- 1. YEAR 9 MATHS: GROUPED FREQUENCY TABLES AN INTERACTIVE QWIZDOM LESSON
- 5. What does ‘f’ mean? Midpoint Frequency Cumulative frequency
- 7. What does Σ f mean? Frequency Cumulative Frequency Total Frequency
- 8. What does ‘x’ mean? Midpoint Cumulative Frequency Multiply
- 14. What have we just worked out? A- Estimated Mean B- Modal Class C- Class containing the median
- 15. What does Σ f mean? Frequency Cumulative Frequency Total Frequency
- 16. Which of these tells us that there are 25 people in total? fx=25 f=25 Σ f=25
- 17. If there are 25 people in total. Which one is the middle one? (number of people + 1) 2
- 19. Which is the modal class?
- 23. Which class contains the median? (Our middle number was 13)
- 24. What does Σ f mean? Total Frequency Cumulative Frequency Frequency