This slide show complements the learner guide NCV 3 Mathematical Literacy Hands-On Training by San Viljoen, published by Future Managers. For more information visit our website www.futuremanagers.net
64. For women: Mean = 190 ÷ 15 = 12 Mode= 13 Median= 13 Range= 20 – 5 = 15 Interquartile range: 17 – 9 = 8 For Men: Mean = 270 ÷17 = 15,88 Mode = 17 Median = 17 Range = 22 – 8 = 14 Interquartile range: 20 – 13 = 7 For the A group of data – The mean, mode and median are all close to 13, and the 15 values range from 5 to 20. The interquartile range shows most values to lie between 9 and 17. For the B group of data – The mean, mode and median are all close to 17, and the values range from 8 to 22. The interquartile range shows most values to lie between 13 and 20. The B group seems consistently a bit higher than the A group.
65.
66. The mean = 107390 ÷ 30 = R3579,67 The mode = R2500 (4 occurrences) The median of wages in this factory = R2750 The range of the wages = 15800 – 1800 = R14000 The interquartile range : Quartile 1 = 7,75 position = R2500 Quartile 2 = 23 rd position = R3250 Interquartile range = 3250 - 2500 = 750
84. Most (40%) of children prefer sweetened artificial orange juice, however this is closely followed by pure apple and orange juice mix (35%). Least popular is Milk (25%)