# Maths Project on Body Mass Index (BMI)

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## Body Mass Index (BMI)

Objective

To investigate the health of students of a class based on the Body Mass Index (BMI).

Where BMI = weigh2 Height2

Description

Measured the heights of all students in my class. Measured their weights in kg.

Established the relationship between height and weight for boys and girls separately.

 Roll. No of Student Height in m Weight in Kg 1. 1.54 36 2. 1.58 45 3. 1.60 44 4. 1.59 56 5. 1.54 55 6. 1.55 43 7. 1.56 56 8. 1.54 57 9. 1.53 43 10. 1.58 38 11. 1.59 59 12. 1.60 45 13. 1.61 56 14. 1.62 54 15. 1.63 53 16. 1.66 52 17. 1.65 45 18. 1.65 43

Calculation:- Case 1 (Girls):-

BMI for roll. No. 1 = weight2

Height2

36 1.542

36 2.37

= 15.18

Similarly calculated BMI for all girls.

 Roll.No Weight in Kg Square of Height BMI 1. 40 2.3716 16.86625 2. 45 2.4964 18.02596 3. 44 2.56 17.1875 4. 65 2.5281 25.71101 5. 55 2.3716 23.19109 6. 43 2.4025 17.89802 7. 56 2.4336 23.01118 8. 57 2.3716 24.03441 9. 43 2.3409 18.369 10. 38 2.4964 15.22192 11. 59 2.5281 23.33768 12. 45 2.56 17.57813 13. 56 2.5921 21.6041 14. 54 2.6244 20.57613 15. 60 2.6569 22.58271 16. 68 2.7556 24.67702 17. 45 2.7225 16.52893 18. 65 2.7225 23.87511

Result of Student's Health according to following table:-

 BMI Health Less than 20 Under weight 20-25 Good health 25-30 Over weight 30 and above Obese(Very fat)

Roll. No. 1 Under weight Roll. No. 5 has good health Roll No. 4 is over weight There is no obese girl.

 Roll.No BMI Health 1. 16.86625 Under weight 2. 18.02596 Under weight 3. 17.1875 Under weight 4. 25.71101 over weight 5. 23.19109 good health 6. 17.89802 Under weight 7. 23.01118 good health 8. 24.03441 good health 9. 18.369 Under weight 10. 15.22192 Under weight 11. 23.33768 good health 12. 17.57813 Under weight 13. 21.6041 good health 14. 20.57613 good health 15. 22.58271 good health 16. 24.67702 good health 17. 16.52893 Under weight 18. 23.87511 good health
 Roll. No Square of Height Weight in Kg BMI 19. 2.56 42 16.40625 20. 2.5281 45 17.79993 21. 2.6244 49 18.67093 22. 2.5281 50 19.7777 23. 2.8224 65 23.03005 24. 2.89 70 24.22145 25. 3.0625 80 26.12245 26. 2.7225 60 22.03857 27. 3.0625 68 22.20408 28. 3.0976 68 21.95248 29. 3.2041 80 24.96801 30. 2.4336 45 18.49112 31. 2.5921 56 21.6041 32. 2.8561 54 18.9069 33. 2.6569 53 19.94806 34. 2.7556 63 22.86253 35. 3.0625 79 25.79592 36. 2.7225 43 15.79431

Calculation:- Case 1 (Boys):-

BMI for roll. No. 19 = weight2

Height2

= 42 1.62

= 42 2.56

= 16.86

Similarly calculated BMI for all boys.

 Roll.No Weight in Kg Square of Height BMI 19. 42 2.3716 16.86625 20 45 2.4964 18.02596 21 49 2.56 17.1875 22 50 2.5281 25.71101 23 65 2.3716 23.19109 24 70 2.4025 17.89802 25 80 2.4336 23.01118 26 60 2.3716 24.03441 27 68 2.3409 18.369 28 68 2.4964 15.22192 29 80 2.5281 23.33768 30 45 2.56 17.57813 31 56 2.5921 21.6041 32 54 2.6244 20.57613 33 53 2.6569 22.58271 34 63 2.7556 24.67702 35 79 2.7225 16.52893 36 43 2.7225 23.87511

Result of Student's Health according to following table:-

 BMI Health Less than 20 Under weight 20-25 Good health 25-30 Over weight 30 and above Obese(Very fat)

Roll. No. 19 Under weight Roll. No. 23 has good health Roll No. 25 is over weight There is no obese boy.

 Roll.No BMI Health 19. 16.86625 Under weight 20 18.02596 Under weight 21 17.1875 Under weight 22 25.71101 Over weight 23 23.19109 Good health 24 17.89802 Under weight 25 23.01118 Good health 26 24.03441 Good health 27 18.369 Under weight 28 15.22192 Under weight 29 23.33768 Good health 30 17.57813 Under weight 31 21.6041 Good health 32 20.57613 Good health 33 22.58271 Good health 34 24.67702 Good health 35 16.52893 Under weight 36 23.87511 Good health

Result the health of most of the students falls in the two categories under weight and good height.

Suggestion:- The under weight students need to take care of their diet to improve their health.

Objective To investigate the health of students of a class based on the Body Mass Index (BMI). Where BMI = 2 weight Height Description Measured the heights of all students in my class. Measured their weights in kg. Established the relationship between height and weight for boys and girls separately. Body Mass Index (BMI) For Girls:- Roll. No of Student Height in m Weight in Kg 1. 1.54 36 2. 1.58 45 3. 1.60 44 4. 1.59 56 5. 1.54 55 6. 1.55 43 7. 1.56 56 8. 1.54 57 9. 1.53 43 10. 1.58 38 11. 1.59 59 12. 1.60 45 13. 1.61 56 14. 1.62 54 15. 1.63 53 16. 1.66 52 17. 1.65 45 18. 1.65 43 Calculation:- Case 1 (Girls):- BMI for roll. No. 1 = 2 weight Height = 2 36 1.54 = 36 2.37 =15.18 Similarly calculated BMI for all girls. Roll.No Weight in Kg Square of Height BMI 1. 40 2.3716 16.86625 2. 45 2.4964 18.02596 3. 44 2.56 17.1875 4. 65 2.5281 25.71101 5. 55 2.3716 23.19109 6. 43 2.4025 17.89802 7. 56 2.4336 23.01118 8. 57 2.3716 24.03441 9. 43 2.3409 18.369 10. 38 2.4964 15.22192 11. 59 2.5281 23.33768 12. 45 2.56 17.57813 13. 56 2.5921 21.6041 14. 54 2.6244 20.57613 15. 60 2.6569 22.58271 16. 68 2.7556 24.67702 17. 45 2.7225 16.52893 18. 65 2.7225 23.87511 Result of Studentâ€™s Health according to following table:- BMI Health Less than 20 Under weight 20-25 Good health 25-30 Over weight 30 and above Obese(Very fat) Roll. No. 1 Under weight Roll. No. 5 has good health Roll No. 4 is over weight There is no obese girl. Roll.No BMI Health 1. 16.86625 Under weight 2. 18.02596 Under weight 3. 17.1875 Under weight 4. 25.71101 over weight 5. 23.19109 good health 6. 17.89802 Under weight 7. 23.01118 good health 8. 24.03441 good health 9. 18.369 Under weight 10. 15.22192 Under weight 11. 23.33768 good health 12. 17.57813 Under weight 13. 21.6041 good health 14. 20.57613 good health 15. 22.58271 good health 16. 24.67702 good health 17. 16.52893 Under weight 18. 23.87511 good health Roll. No Square of Height Weight in Kg BMI 19. 2.56 42 16.40625 20. 2.5281 45 17.79993 21. 2.6244 49 18.67093 22. 2.5281 50 19.7777 23. 2.8224 65 23.03005 24. 2.89 70 24.22145 25. 3.0625 80 26.12245 26. 2.7225 60 22.03857 27. 3.0625 68 22.20408 28. 3.0976 68 21.95248 29. 3.2041 80 24.96801 30. 2.4336 45 18.49112 31. 2.5921 56 21.6041 32. 2.8561 54 18.9069 33. 2.6569 53 19.94806 34. 2.7556 63 22.86253 35. 3.0625 79 25.79592 36. 2.7225 43 15.79431 Calculation:- Case 1 (Boys):- BMI for roll. No. 19 = 2 weight Height = 2 42 1.6 = 42 2.56 =16.86 Similarly calculated BMI for all boys. Data for Boys:- Roll.No Weight in Kg Square of Height BMI 19. 42 2.3716 16.86625 20 45 2.4964 18.02596 21 49 2.56 17.1875 22 50 2.5281 25.71101 23 65 2.3716 23.19109 24 70 2.4025 17.89802 25 80 2.4336 23.01118 26 60 2.3716 24.03441 27 68 2.3409 18.369 28 68 2.4964 15.22192 29 80 2.5281 23.33768 30 45 2.56 17.57813 31 56 2.5921 21.6041 32 54 2.6244 20.57613 33 53 2.6569 22.58271 34 63 2.7556 24.67702 35 79 2.7225 16.52893 36 43 2.7225 23.87511 Result of Studentâ€™s Health according to following table:- BMI Health Less than 20 Under weight 20-25 Good health 25-30 Over weight 30 and above Obese(Very fat) Roll. No. 19 Under weight Roll. No. 23 has good health Roll No. 25 is over weight There is no obese boy. Roll.No BMI Health 19. 16.86625 Under weight 20 18.02596 Under weight 21 17.1875 Under weight 22 25.71101 Over weight 23 23.19109 Good health 24 17.89802 Under weight 25 23.01118 Good health 26 24.03441 Good health 27 18.369 Under weight 28 15.22192 Under weight 29 23.33768 Good health 30 17.57813 Under weight 31 21.6041 Good health 32 20.57613 Good health 33 22.58271 Good health 34 24.67702 Good health 35 16.52893 Under weight 36 23.87511 Good health Result the health of most of the students falls in the two categories under weight and good height. Suggestion:- The under weight students need to take care of their diet to improve their health.

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