10.07.2015 Views

Teacher's Guide - Pearson

Teacher's Guide - Pearson

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Exercise 20.2 (Student’s Book page 372)1. Marks of 210 students in a test250Cumulative frequency20015010050010 20 30 40 50 60 70 80 90 100Marks %a) 43%b) 65%c) 65 2 43 5 222. Distance travelled by students to school300Cumulative frequency2502001501005005 10 15 20 25 30 35Distance (km)a) Median 5 15 kmb) Lower quartile 5 11.5 kmc) Upper quartile 5 20 kmd) Inter-quartile range 5 20 2 11.5 5 8.5 km128 EXPLORING MATHEMATICS FORM 3

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