Question

Please correct the answers chosen.

9) T

12) b

13) c

9) When conducting research in public health, every effort should be made to avoid entering into situations where each subject involved in a study does not contribute equally to the outcome.

T/F

12) Of the following statements, which is not true regarding hypothesis tests:

a. specific hypothesis tests can be used to determine if a specific variable has an effect on the outcome

b. the hypothesis test for effects are useful if our treatment contains dummy variables

c. the overall hypothesis test, tests whether or not there is a relationship between any of the variables and the outcome

d. dummy variables are variables classified according to the I.Q of the persons being included in the study

13) Which of the following is not true of age-adjusted rates:

a. age can often times become a confounding variable if it is not taken into consideration

b. age-adjusted rates are rates that have been adjusted in such a way as to standardize them to a particular population

c. adjusting for age is seldom used in public health because it tends to skew the test results leading to inherent unreliability

d. age adjusting rates is a way to make fairer comparisons between different groups with different age distributions

Answer 1

9) When conducting research in public health, every effort should be made to avoid entering into situations where each subject involved in a study does not contribute equally to the outcome.

T/F

True , this is simply to avoid bias in the outcome of the experiment

12) Of the following statements, which is not true regarding hypothesis tests:

a. specific hypothesis tests can be used to determine if a specific variable has an effect on the outcome

b. the hypothesis test for effects are useful if our treatment contains dummy variables

c. the overall hypothesis test, tests whether or not there is a relationship between any of the variables and the outcome

d. dummy variables are variables classified according to the I.Q of the persons being included in the study

This is false , dummy variables are created on a categorical variable , while IQ scores are measured on a continous scale , say fom 0 to 100

13 th cant be answered without more background information about age adjusted rates