A-LevelMathematicsProbability and statisticsMay/June 2024Paper 5 Q47 Marks
The back-to-back stem-and-leaf diagram shows the annual salaries of 19 employees at each of two companies, Petral and Ravon. Petral 30 | 0 0 3 31 | 1 2 2 8 9 9 32 | 0 4 5 5 33 | 3 5 7 34 | 0 1 35 | 3 36 | 8 Ravon 30 | 2 6 31 | 1 5 32 | 0 0 2 33 | 0 4 8 9 34 | 1 1 3 4 6 35 | 3 36 | 7 9 Key: 2|31|5 means $31200 for a Petral employee and $31500 for a Ravon employee. The median salary of the Ravon employees is $33800, the lower quartile is $32000 and the upper quartile is $34400.
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