11.The branch of biostatistics that deals with methods of collection, organization and presentation of data is called as________.

a.health care

b.descriptive biostatistics

c.inferential biostatistics

c.comparative biostatistics

12.The sampling error is defined as________.

a.difference between parameter and sample

b.difference between population and sample

c.difference between population and sample

d.difference between population and sample

13.If two variables, x and y, have a very strong linear relationship, then________.

a.there is evidence that x causes a change in y

b.there is evidence that y causes a change in x

c.none of the above

d.there might not be any causal relationship between x and y

14.A process by which we estimate the value of dependent variable on the basis of one or more independent variables is called ________.

a.residual

b.regression

c.slope

d.correlation

15.Quantitative variables that can have any numerical values are called________.

a.quantitative variables

b.discrete variables

c.absolute variables

d.continuous variables

16.Median, mode, deciles and percentiles are all considered as measure of________.

a.population averages

b.sample averages

c.mathematical averages

d.averages of position

17.If mean of 6 numbers is 41, then the sum of these numbers is________.

a.456

b.250

c.134

d.246

18.Subgroups identified through________in the population are represented in the same proportion that they exist in the population.

a.stratified sampling

b.simple random sampling

c.criterion sampling

d.systematic sampling

19.Which of the following is a subset of population?

a.set

b.sample

c.data

d.distribution

20.If mean of 6 numbers is 17, then the sum of numbers is________.

a.102

b.103

c.150

d.120