Question 3 - Page 128 - Data Detective - Chapter 5 Class 7 - Connecting the Dots... (Ganita Prakash II)

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Question 3 - Page 128 Based on the trend observed in the table, write your estimates of the heights of boys and girls for ages 5 to 19 in the year 2029.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 19 163.5 151.9 164.2 152.4 165.1 153 166.5 155.2If we look at the trend from 2009 to 2019, heights increased by about 𝟏 to 𝟑" " 𝒄𝒎 for most ages. We can predict a similar small increase for 2029. Example Estimates for 2029: Age 5 (Boys): In 2009 it was 105.1, in 2019 it was 107.1 (+2 cm). So for 2029, we might estimate ∼𝟏𝟎𝟗" " 𝐜𝐦. Age 10 (Girls): In 2009 it was 129.9 , in 2019 it was 132.8 (+2.9 cm). So for 2029, we might estimate ∼𝟏𝟑𝟓" " 𝐜𝐦. Age 19 (Boys): In 2009 it was 165.1, in 2019 it was 166.5(+1.4" " cm). So for 2029, we might estimate ∼𝟏𝟔𝟖" " 𝐜𝐦.