Telegram group: T.me/BBCNOUN
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PHS805
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1. About methodology, one of these is not true

	      it should contain enough information to determine the quality of the method used

	      the information should be sufficient to ensure replicability

	--->> it is not necessary to include the sample size

	      information on the research setting should be included

2. One of the following is not true about case control studies

	      it involves a backward look at the association between exposure and outcomes

	      it is effective for the study of rare health conditions

	--->> it does not require the use of a control group

	      it is usually limited to one outcome alone

3. One of the following is not a type of statistical sampling

	      simple random sampling

	      stratified samping

	--->> logical sampling

	      cluster sampling

4. Ethical issues

	--->> they apply to all types of public health research

	      informed consent is not necessary for public health research

	      confidentiality may not be explained to the participants

	      assent of parents is not needed in the case of minors

5. Which of these is true about linear regression?

	--->> the dependent data must be a continuous data

	      it is used to calculate the linear relationship between three variables

	      it is similar to correlation in every respect

	      there are three types of linear regressions

6. About narrative studies

	      they are not appropriate for personal

	      they do not examine the whole picture

	      they use well structured guides to collect information

	--->> they use a semi-structured guide to collect data

7. The following are steps in investigating the relationship between two continuous variables, except?

	      drawing a scatter diagram

	--->> the independent variable is plotted on the Y-axis

	      Y = bo + b1 X can be used to express the measure of linearity

	      b1 is the slope coefficient

8. In moderating a focused group discussion, one must

	      make sure the narrative is only controlled by one participant

	      some humor is frowned at

	      a question and answer format is ideal

	--->> does not need to comment on everything said

9. One of these is not a type of measurement scale in public health

	--->> discretionary values

	      ratio scale

	      ordinal scale

	      interval scale

10. The ratio scale

	      does not have nominal property

	--->> has a true zero point

	      may be non metric

	      they cannot be continuous variables