... of the Western Palearctic.") Data Presentation Height (cm) Wing-span (cm) Height (cm) Wing-span (cm) 14 24 14 27 11 22 16 29 11 21 33 58 14 28 38 85 15 29 40 90 17 30 34 74 20 41 43 85 18 31 41 76 17 40 50 126 19 42 50 106 17 41 21 37 20 41 21 42 14 30 47 102 14 32 47 121 17 38 14 32 15 30 12 21 19 36 12 25 16 30 16 27 14 31 16 31 12 27 15 30 12 30 15 33 12 30 10 17 19 34 11 18 17 34 11 19 12 29 12 20 18 33 16 25 16 28 17 29 19 34 15 22 15 27 15 25 14 25 16 25 18 37 16 30 15 27 15 25 17 28 16 28 17 27 27 39 18 30 34 45 19 31 25 36 10 17 30 41 18 26 17 28 18 32 20 32 15 27 15 38 14 22 19 42 18 30 55 86 22 36 65 104 18 37 41 68 17 32 49 74 12 24 44 70 16 31 52 84 11 14 38 63 17 32 14 28 During the time when collecting the data, I ensure that it is chosen randomly and represents as many kind of different species of birds as it can. Therefore I chose to take up to 100 data which can represent, mostly, the overall body measurements of birds. Each of the three reference books contains different species of birds, by selecting the data from the three, I can ensure that my collection is a representative of different kinds of birds. However, as one can see, the data that I have collected tends to be small values; which means birds like eagles, ostriches, peacocks, vultures, swans, herons, flamingos, etc., are not included (not in the three reference books). From this point of view, the data only concerns birds which are small in size. Data Presentation for Analysis Height (cm) x Frequency ? Mid-value x1 Cumulative frequency ?x1 0 ? h ...

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