Abuses and misuses of statistics are frequent. This digest attempts to warn against these in three broad classes of pitfalls: sources of bias, errors of methodology, and misinterpretation of results. Sources of bias are conditions or circumstances that affect the external validity of statistical results. In order for a researcher to make…

Thoughtful, well-planned and systematic reviews of both instructional and noninstructional programs provide community colleges with a way of determining whether programs are meeting stated objectives and what standards of performance should be maintained. Programs that need improvement or should be eliminated can be identified, and fiscal…