TABLE 11-8 An Important Factor in Selecting Database Software Is the Time

question 114

True/False

TABLE 11-8
An important factor in selecting database software is the time required for a user to learn how to use the system. To evaluate three potential brands (A, B and C) of database software, a company designed a test involving five different employees. To reduce variability due to differences among employees, each of the five employees is trained on each of the three different brands. The amount of time (in hours) needed to learn each of the three different brands is given below:

Below is the Excel output for the randomized block design:

-Referring to Table 11-8, the randomized block F test is valid only if the population of the amount of time needed is normally distributed for the 3 brands.

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Definitions:

Volunteer Bias

The distortion of research results due to differences between those who choose to participate in studies and those who do not.

Representative Sample

A portion of the population that correctly mirrors the characteristics of the whole population.

Operationally Defined

A term or variable is defined by the specific process or set of criteria by which it is measured or determined in a study or experiment.

Participant Observation

A research method where the investigator actively engages in the community or situation being studied while observing its dynamics.