ERIC Number: ED106335
Record Type: RIE
Publication Date: 1975-Apr
Reference Count: 0
Estimating Total Score and Item Completion Statistics When All Examinees Do Not Finish.
Reilly, Richard R.
For most tests administered with time limits some examinees complete all items while others do not. It is often useful to know what the distribution of items completed would be if the number of items on the test were much larger. It may also be of interest to estimate the correlation between working speed, as measured by the number of items completed, and the total score. The method described assumes that working speed and total score are bivariate normally distributed in the population of interest and allows estimation of the means and standard deviations for items completed and total score, and the correlation between items completed and total score given a theoretically infinite number of items in the same time limit. (Author)
Publication Type: Reports - Research
Education Level: N/A
Authoring Institution: N/A
Note: Paper presented at the Annual Meetings of the American Educational Research Association and the National Council on Measurement in Education (Washington, D.C., March 30-April 3, 1975)