Question 1 - Page 128 - Data Detective - Chapter 5 Class 7 - Connecting the Dots... (Ganita Prakash II)

Transcript

Question 1 - Page 128 In 2019, between which two successive ages from 5 to 19 did boys grow the most? Between which two successive ages from 5 to 19 did girls grow most? Age 1989 1999 2009 2019 5 101.3 100 102.4 101.7 105.1 104 107.1 107.2 6 107.5 106 108.7 107.5 111 109.7 113.1 112.9 7 113 111.4 114.2 112.6 116.2 114.8 118.6 118 8 118.1 116.5 119.2 117.5 120.9 119.6 123.5 122.7 9 122.9 121.7 123.9 122.4 125.2 124.5 128.1 127.6 10 127.5 127.3 128.3 127.8 129.4 129.9 132.6 132.8 11 132.2 133.4 132.8 133.6 133.7 135.7 137 138.6 12 137.7 139 138 139.1 138.9 141.1 142.2 143.8 13 144.2 143.2 144.3 143.1 145.2 145.1 148.4 147.7 14 150.6 146.2 150.5 146.1 151.5 148 154.4 150.4 15 155.4 148.5 155.2 148.4 156.3 150.1 159 152.4 16 158.9 150.1 158.7 150.1 159.9 151.6 162.3 153.8 17 161.3 151.2 161.4 151.3 162.6 152.6 164.6 154.7 18 162.9 151.8 163.2 152.1 164.3 153 166 155.2 19 163.5 151.9 164.2 152.4 165.1 153 166.5 155.2For Boys (2019 column): Age 11 to 𝟏𝟐:142.2−137=5.2" " cm Age 12 to 13 : 148.4−142.2=𝟔.𝟐 cm Age 13 to 14 : 154.4−148.4=6.0" " cm Thus, we can say that Boys grew the most between Age 12 and 13. For Girls (2019 column): Age 9 to 10 : 132.8−128.1=4.7" " cm Age 10 to 𝟏𝟏:138.6−132.8=5.8" " cm Age 11 to 𝟏𝟐:143.8−138.6=5.2" " cm Thus, we can say that Girls grew the most between Age 10 and 11. Note: This matches our earlier observation that girls have their growth spurt earlier!