CHAP 10

• analysis of variance for a factorial

  research design.

  factorial analysis of variance
• way of organizing a study in which the effects

  of two or more variables are studied at

  once by making groupings of every

  combination of the variables.

  factorial research design
• A situation where the combination of variables has a special effect is called an

  interaction effect
• analysis of variance for a two-way

  factorial research design.

  two-way analysis of variance
• a variable that separates groups in analysis of variance.

  grouping variable
• analysis of variance in which there is

  only one grouping variable.

  one-way analysis of variance
• difference between groups

  on one grouping variable in a factorial

  design in analysis of variance; result for

  a grouping variable, averaging across the

  levels of the other grouping variable(s).

  main effect
• in a factorial design, particular

  combination of levels of the variables

  that divide the group.

  cell
• mean of a particular

  combination of levels of the variables

  that divide the groups in a factorial

  design in analysis of variance.

  cell mean
• in a factorial design

  in analysis of variance, mean score for

  all the participants at a particular level of

  one of the grouping variables.

  marginal means
• analysis of variance for a

  repeated measures design in which each

  person is tested more than once so that

  the levels of the grouping variable(s) are

  different times or types of testing for the

  same persons.

  repeated measures analysis of

  variance
• dichotomizing dividing the scores for

  a variable into two groups. Also called???

  dichotomizing/median split