# Statistics and Probability

STATISTICS AND PROBABILITY |
HNC - CONSTRUCTION |
|

CONDITION NUMBER OF PERCENTAGE DEGREES
RELATED CASES       %     °
Dermatitis 143 12.77 45.972
Muscular/Skeletal Injuries 214 19.11 68.796
Vibration White Finger 86 7.68 27.648
Mesthelioma 278 24.82 89.352
Diffuse Pleural Thickening 399 35.62 128.232

A Pie Chart
Total number of cases is 143 + 214 + 86 + 278 + 399 =   1120
Therefore 100% of cases are 1120.
DERMATITIS
Percentage of cases that have dermatitis is (143 / 1120) x 100 = 12.77%
360 x 0.1277 = 45.972°
MUSCULAR SKELETAL/INJURIES
Percentage of cases that have muscular/skeletal injuries is (214/ 1120) x 100 = 19.11%.
360 x 0.1911 = 68.796°
VIBRATION WHITE FINGER
Percentage of cases that have vibration white finger is (86/1120) x 100 = 7.68%
360 x 0.0768 = 27.648°
MESTHELIOMA
Percentage of cases that have mesthelioma is (278/1120) x 100 = 24.82%
360 x 0.2482 = 89.352°
DIFFUSE PLEURAL THICKENING
Percentage of cases that have pleural thickening is (399/1120) x 100 = 35.62%
360 x 0.3562 = 128.232°

The information in this chart would be a significant help if you were the Health and Safety Officer for a construction company. It would help you influence risk assessments in certain areas, for example, looking at which areas on site could cause Diffuse Pleural Thickening and Mesthelioma. This would allow steps to be taken to try to reduce the number of cases. This could be achieved by perhaps issuing more specialist PPE (Personal protective Equipment).   It may also be a good idea to consider if there are any weaknesses in working practices identifying the need for additional training.
Ensuring good hand washing facilities on site, with access to barrier creams, would possibly help to improve the number of cases of dermatitis. It is also good practice to ensure workers are following Health and Safety Guidelines and wearing appropriate gloves whilst working on site.
A further...