EM-2993
Quartiles and percentiles
E Math · Secondary 4 · Medium · Quartiles and percentiles
A box-and-whisker plot for class X shows that the median mark is 62 and the inter-quartile range is 28. The 75th percentile (upper quartile) is 78 marks.
Find the lower quartile mark.
Find the lower quartile mark.
- 34
- 50
- 56
- 90
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