Question

After a population of 1,000 high school seniors is divided by sex and size of school attended, the random selection of a sample to 1. represent these proportions of the population is called a. systematic sampling b. matched-pair sampling c. stratified random sampling d. cluster sampling 2. A researcher wishes to survey student apinions on a proposed increase in activity fees at her university. She decides to select a sample for telephone interviewing by selecting every 20th name in the student directory indexed by student ID number (907 number ). What is this type of sampling called? Systematic a Random Stratified C d. Cluster 3. In the best of situation, we want convergent correlation coefficients to be as as possible and discriminant correlation coefficients as possible. to be as high, low a bi high, high low, high C. d low, low Cronbach's coefficient alpha is a measure of: 4. Internal consistency a b. Inter-rater reliability Intra-rater reliability C d. Validity Non of the above A newly created cancer screening test is given to a group of patients. After five years the screening test scores of those patients developing cancer is compared to patients who have not developed cancer. This would be an example of what type of validity? 5. Face validity Concurrent validity b. Convergent validity Predictive validity d.

Answer 1

1. Option c .stratified random sampling.

It will highlight the differences between the two groups of sampling.

2. Option A ; systematic sampling

3.Option A ; high , low

4.Option A : internal consistency( ( to measure how close to set a group)

5.Option B ; concurrent validity.