Quiz 1

NAME:  

Enter the single best answer to each question below.

Item 1:
A biomedical researcher wanted to find out the degree to which time-on-task in learning and practicing medical terminology using a tutorial CAI module influenced students' performance on a subsequent medical terminology test. She defined time-on-task as the total duration of CAI module utilization, as assessed by the microcomputer's internal real time clock. The scale for measurement of the independent variable for this research (time-on-task) would best be classified as:

Item 2:
A statistical concept which provides a measure of the degree of peakedness of a distribution is the:

Use the following information for questions 3 through 9.

In an effort to facilitate the long term cardiovascular health of a small group of heart patients who have been recuperating from coronary bypass operations, the therapeutic team has patients participate in a patient education program. The program is designed to help patients implement effective dietary and exercise efforts to improve cardiovascular risk factors. As a first step, a written pretest is administered to get an initial picture of patients' knowledge of issues pertinent to cardiovascular risk factors. It is important to obtain a number of descriptive measures on the pretest in order to get an overall assessment of the patients to be used for diagnostic purposes and for later comparison with posttest scores after the program has been in effect. Patients' scores on the pretest are recorded in a frequency distribution as indicated in the table below.

                          X          f

                          8          2
                          7          2
                          6          3
                          5          4
                          4          5
                          3          2
                          1          2
                                   _____
                                    20 = N
       

Item 3:
The frequency distribution above is a:

Item 4:
What is the cumulative frequency of a score of 7 in the distribution above?

Answer:  

Item 5:
What is the relative frequency of a score of 8 in the distribution above?

Answer:  

Answer:  

Item 7:
What is the mean of the distribution above?

Answer:  

Item 8:
What is the median of the distribution above?

Answer:  

Item 9:
What is the mode of the distribution above?

Answer:  

Item 10:
What is the range of the distribution above?

Answer: