7. An analysis of the race of patients who visit an emergency room reveals that 40% are white,25% are black,20% are Native American,and 15% are Asian.These data would best be depicted graphically with a a.Venn diagram b.Cumulative frequency graph c.Normal curve d.Pie chart
8. In a village of 300 population,60% constitute Hindus,20% Muslims, 10% Sikhs and 10% Christians. We want to take a sample of 10% of the population to study the eating habits of this population. The best method would be:
a. Simple random sampling b. Stratified random sampling c.Systematic random sampling d. Non-random sampling
9. When the standard for accepting the difference was at P-value of 0.05 and the calculated value was 0.01, the null hypothesis was rejected by the researcher. What do you think of results?
a.Wrongly rejected b.Significant difference c.No difference d.Alternate hypothesis is wrong
10.A study was conducted to assess the height of students of 4th year in 10 Medical colleges the values of heights ranged between 5.5-5.10 feet.A histogram has been selected by the researcher to present these results as it is a:
a. Nominal data b.Categorical data c.Both qualitative and quantitative data d. Continuous data
11. When a relationship between the heart rate and valva's ratio is studied, mean is useful but dispersion of the data is also very useful. Which method of spread will be more useful in this? a.Range b. Standard deviation c. Coefficient of variance d.Percentage