Exam 12: Applying Statistical Methods in Your Own Research Project

In a study of the effects of lighting on concentration, 30 participants performed a standard task while exposed to a dim light and another 30 participants performed the same task while exposed to a bright light. You would use a t test for __________ to analyze the results.

Many important discoveries in the behavioral and social sciences came not from what was predicted in advance, but from unexpected findings during data exploration. (True or False)

The following situation(s)could result in missing data:

Some researchers simply make it a practice to exclude participants whose scores are very extreme. (True or False)

Consider a study looking at the relation of gender and performance on a statistics examination. This study is about __________.

Consider a study comparing the effects of different paints colors (pale blue, bright red, pale yellow)in a child's play room on children's mood (rated on a 50-points scale). This study is comparing:

Most statistical tests require that the variables be __________ in the population.

To avoid work and careless errors, it is recommended that researchers enter datasheet scores directly into a spreadsheet and let the computer do any needed __________.

To figure statistical power of a planned study, you first need to decide what statistical test you will use. Then you have to make some estimate of the expected __________.

The Results section of a research article in the behavioral and social sciences usually begins with a presentation of __________.

Before starting out on a new study, experienced researchers plan what __________ they will use.

Most statistical tests require that the variables be _______________ in the population.