Question

1. If a patient is harmed or killed just by the treatment of the disease, it is called the ____________ effect.

not too good

bad

iatrogenic

polygenic

2. A test possesses good sensitivity if it has a

high true-positive rate

high true-negative rate

high false-positive rate

high false-negative rate.

4. A test has good specificity if it has a

high true-positive rate

high true-negative rate

high false-positive rate

high false-negative rate

5. The diagnostic accuracy of a test is sometimes called the _________ of a diagnostic test.

likelihood

sensitivity

specificity

efficiency

6. The number of new verified cases of disease in a year is called

prevalence

incidence

likelihood

number of new cases

7. Which of the following is true about a multivariate analysis of variance?

one or more independent variables, one or more dependent variables

two or more independent variables, with one or more levels of each independent variables

one or more independent variables, two or more dependent variables

All of the above are true

8. Which of the following is true about multivariate statistics?

only computed by computer programs

can easily be computed by the average calculator

there are few debates about their use and interpretation

all of the above are true

9. Which of the following is not true of ANCOVA?

covaries the effect of one or more nuisance variables

covaries the effect of one or more nuisance variables upon the independent variable

covaries the effect of one or more nuisance variables upon the dependent variable

covaries the effect of one or more confounding variables

10. Which of the following is not true about MANCOVA?

handles more than one dependent variable

covaries one or more nuisance variables

handles one or more independent variables

covaries only one confounding variable but one or more nuisance variables

11. Which of the following is not true of factor analysis?

there is an infinite number of correct solutions

it can be used to reduce the number of items on a test or measure

factor analysis designs are similar to ANOVA designs

in IQ research, it found a single "g" factor

12. In order to have a reliable factor analysis of 57 items, the study should be conducted on at least _____ people.

57

285

570

1140

13. Canonical correlation comes closest to being a technique related to

correlation

regression

factor analysis

all of the above

14. In linear discriminant function analysis, the criterion variable

is usually dichotomous

is usually continuous

is an a priori assumption by the experimenter

all of the above

a and c

15. Shrinkage in linear discriminant function analysis can be minimized by

having the number of subjects in the smallest group be 10 times the number of predictor variables

having the number of subjects in the largest group be 10 times the number of predictor variables

having the number of subjects in the smallest group be at least 30

having the number of subjects in both groups be at least 150

16. The statistical object of cluster analysis is to minimize _____ variation and maximize variation between _____.

within-group; groups

group; subjects

group; subjects

trend; cycles

Answer 1

1. Correct answer : iatrogenic

This is the definition of iatrogenic effect.

2. Correct answer : high True positive rate

By definition, test sensitivity is the ability of a test to correctly identify those with the disease which is closely and directly related to true positive rate.

3. Correct answer : high True negative rate

By definition,  test specificity is the ability of the test to correctly identify those without the disease which is closely and directly related to true negative rate.