Pearson Progression Step Q Scheme Marks AOs and Progress descriptor 6a 2nd = (5 2) + (4 4) + (4 6) + (7 5) + (15 1) = 100 M1 3.1a Calculate probabilities from A1 1.1b relative frequency P(Takes longer than 18 mins) or equivalent. M1 3.1a tables and real data. A1 1.1b (4) 6b M1 2.2b 2nd P(Takes less than 30 mins) Calculate or equivalent. probabilities from M1 1.1b relative frequency 1.1b A1 tables and real data. (3) (7 Notes 6a M1 for attempt to find total frequency by adding at least three frequency density” terms (which may “width contain errors).Alternative: M1 for M1 for 1 A1 for o.e. − Pearson Progression Step Q Scheme Marks AOs and Progress descriptor 7a Total frequency = 120 B1 3.1a 2nd P(Less than 17 cm) or equivalent or 0.475 1.1b Calculate M1 probabilities from A1 1.1b relative frequency tables and real data. (3) 7b P(Between 12 cm and 18 cm) or awrt 0.558 M1 2.2b 2nd 1.1b Calculate A1 probabilities from
Q Scheme Marks AOs Pearson Progression Step and Progress descriptor 6a = (5 2) + (4 4) + (4 6) + (7 5) + (15 1) = 100 P(Takes longer than 18 mins) or equivalent. M1 A1 M1 A1 3.1a 1.1b 3.1a 1.1b 2nd Calculate probabilities from relative frequency tables and real data. (4) 6b P(Takes less than 30 mins) or equivalent. M1 M1 A1 2.2b 1.1b 1.1b 2nd Calculate probabilities from relative frequency tables and real data. (3) (7 Notes 6a M1 for attempt to find total frequency by adding at least three “width frequency density” terms (which may contain errors).Alternative: M1 for M1 for 1 − A1 for o.e. Q Scheme Marks AOs Pearson Progression Step and Progress descriptor 7a Total frequency = 120 P(Less than 17 cm) or equivalent or 0.475 B1 M1 A1 3.1a 1.1b 1.1b 2nd Calculate probabilities from relative frequency tables and real data. (3) 7b P(Between 12 cm and 18 cm) or awrt 0.558 M1 A1 2.2b 1.1b 2nd Calculate probabilities from
as_maths_statistics_unit_3_ms.docx