Notes 1d Must be whole numbers for A1. Pearson Progression Step Q Scheme Marks AOs and Progress descriptor 2a Order the data. M1 1.1b 2nd 125, 160, 169, 171, 175, 186, 210, 243, 250, 258, 390, 420 Understand quartiles and =(250 + 258) = 254 A1 1.1b percentiles. Q3 (2) 2b +1.5(Q3 = 254 + 1.5(254 170) M1 1.1b 4th Q3 – Q1) – Calculate outliers = 380 A1 1.1b in data sets and clean data. Patients (420) and (390) are outliers (so may be suspected B1 3.2a F B by the doctor as smoking more than one packet of cigarettes per day). (3) (5 marks) Notes Pearson Progression Step Q Scheme Marks AOs and Progress descriptor 3a or awrt 0.167 M1 1.1b 1st A1 1.1b Calculate probabilities for single events.
Notes 1d Must be whole numbers for A1. Q Scheme Marks AOs Pearson Progression Step and Progress descriptor 2a Order the data. 125, 160, 169, 171, 175, 186, 210, 243, 250, 258, 390, 420 M1 1.1b 2nd Understand quartiles and percentiles. Q3 =(250 + 258) = 254 A1 1.1b (2) 2b Q3 +1.5(Q3 – Q1) = 254 + 1.5(254 – 170) M1 1.1b 4th Calculate outliers in data sets and clean data. = 380 A1 1.1b Patients F (420) and B (390) are outliers (so may be suspected by the doctor as smoking more than one packet of cigarettes per day). B1 3.2a (3) (5 marks) Notes Q Scheme Marks AOs Pearson Progression Step and Progress descriptor 3a or awrt 0.167 M1 A1 1.1b 1.1b 1st Calculate probabilities for single events.