A sampling used to represent sub-groups proportionally in the sample which they are known to exist in population is an example of 1) Systematic sample 2) Stratified sample 3) Convenient sample 4) Judgement sample
Community DentistryAnswer: 2
The mean DMFT values for 12-year-old school children is 2.5. 68% of the population has DMFT values between 2 and 3. The standard deviation for the population is 1) 0.5 2) 1 3) 2 4) 3
Community DentistryAnswer: 1
Ranking the individuals from with those of tallest to those whose are shortest in an ascending manner is an example of (or) If the grading of diabetes is classified as "mild", "moderate" and "severe" the scale of measurement used is 1) Ordinal scale 2) Nominal scale 3) Rating scale 4) Interval scale
Community DentistryAnswer: 1
Main mechanism of action of systemic fluoride is 1) Rreventing plaque formation 2) Reduction of solubility of enamel as content of fluoride increases 3) Both of the above 4) None of the above
Community DentistryAnswer: 2
According to WHO, minimum amount of fluoride that should be present in salt for effective anticaries activity is 1) 3 mg of F/5 g of salt 2) 1.5 mg of F/5 g of salt 3) 10 mg of F/5 g of salt 4) 100 mg of F/5 g of salt
Community DentistryAnswer: 2
Case control study comes under 1) Cross-sectional study 2) Retrospective study 3) Prospective study 4) Mass education study
Community DentistryAnswer: 2
Which of the above statements are correct 1) 1 and 4 2) 1 and 3 3) 2 and 3 4) 2 and 4
Community DentistryAnswer: 2
Fluoride content is more in which milk product? 1) Cheese 2) Butter 3) Toned milk 4) Butter milk
