Height of group of 20 boys aged 10 years was 140 ± 13 cm and 20 girls of same age was 135 cm ± 7 cm. To test the statistical significance of difference in height, test applicable is –

Social & Preventive Medicine

Height of group of 20 boys aged 10 years was 140 ± 13 cm and 20 girls of same age was 135 cm ± 7 cm. To test the statistical significance of difference in height, test applicable is –

A study is to be conducted with regards to the fat content…

'There has been a gradual increase in number of non-communicable disease cases…

All of the following are done to remove Confounding except