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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.

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