Cambridge International Mathematics

Coordinate geometry (Chapter 12) 269 ) ¡ 4 a¡ 2 = ¡ 2 1 μ a¡ 2 a¡ 2 ¶ fachieving a common denominatorg ) ¡4=¡2(a¡2) fequating nu ...

270 Coordinate geometry (Chapter 12) COLLINEAR POINTS Three or more points arecollinearif they lie on the same straight line. If ...

Coordinate geometry (Chapter 12) 271 a Mis μ 3+1 2 , ¡1+7 2 ¶ which is (2,3).Nis μ 3+¡ 1 2 , ¡1+5 2 ¶ which is (1,2). b gradient ...

272 Coordinate geometry (Chapter 12) 5 a Find the coordinates of: i P ii Q iii R iv S. b Find the gradient of: i PQ ii QR iii RS ...

Coordinate geometry (Chapter 12) 273 9 Findbgiven that A(¡ 6 ,2),B(b,0)and C(3,¡4)are collinear. 10 Given A(¡ 3 ,1),B(1,4)and C( ...

Challenge #endboxedheading 274 Coordinate geometry (Chapter 12) 1 Triangle ABC sits on thex-axis so that vertices A and B are eq ...

Analysis of discrete data 13 Contents: A Variables used in statistics [11.2] B Organising and describing discrete data [11.2, 11 ...

276 Analysis of discrete data (Chapter 13) The results are: Before upgrade 8497 5967 8726 11 10 8 8 5779 9 7 10 6 610109 8657 8 ...

Analysis of discrete data (Chapter 13) 277 There are two types of variables that we commonly deal with: categoricalvariables and ...

278 Analysis of discrete data (Chapter 13) EXERCISE 13A 1 Classify the following variables as either categorical or numerical: a ...

Analysis of discrete data (Chapter 13) 279 Below is the table forBefore upgrade: No. of accidents/month Tally Frequency 2 j 1 3 ...

280 Analysis of discrete data (Chapter 13) 2 A randomly selected sample of shoppers was asked, ‘How many times did you shop at a ...

Analysis of discrete data (Chapter 13) 281 Number of people Tally Frequency 10 to 19 jjjj©© 5 20 to 29 jjjj©©jjjj 9 30 to 39 jjj ...

282 Analysis of discrete data (Chapter 13) 82 57 75 71 66 80 92 74 89 70 74 60 98 70 83 55 67 85 78 62 83 71 77 69 62 83 94 88 6 ...

Analysis of discrete data (Chapter 13) 283 If there arendata values, find the value of n+1 2 . The median is the μ n+1 2 ¶ th da ...

284 Analysis of discrete data (Chapter 13) Example 2 Self Tutor Solve the following problems: a The mean of six scores is 78 : 5 ...

Analysis of discrete data (Chapter 13) 285 5 A basketball team scored 38 , 52 , 43 , 54 , 41 and 36 points in their first six ma ...

286 Analysis of discrete data (Chapter 13) THE RANGE Therangeis the difference between themaximum(largest) data value and themin ...

Analysis of discrete data (Chapter 13) 287 Example 5 Self Tutor For the data set: 6 , 10 , 7 , 8 , 13 , 7 , 10 , 8 , 1 , 7 , 5 , ...

288 Analysis of discrete data (Chapter 13) Stem Leaf 2 0122 3 0014458 4 0234669 5 11458 5 j 1 represents 51 3 For the data set g ...