QUESTION TWO: The following marks were obtained by candidates in an examination (no fractions of a mark were awarded): Marks Number of candidates 0-5 2 6-10 8. 11-15 20 16-20 30 21-25 50 26-30 80...

Extracted text: QUESTION TWO: The following marks were obtained by candidates in an examination (no fractions of a mark were awarded): Marks Number of candidates 0-5 2 6-10 8. 11-15 20 16-20 30 21-25 50 26-30 80 31-35 120 36-40 150 41-45 200 46-50 220 51-55 280 56-60 320 61-65 260 66-70 160 71-75 120 76-80 100 81-85 60 86-90 40 91-95 17 96-100 3 Total 2240 2 Required: 1. Construct a 'less than' ogive and estimate the following: i) ii) iii) The median The first quartile The third quartile