Question

To study the effect of social environment on play behavior, Dr. A is investigating 36 children’s rough- and-tumble play in an observational study where one group plays in the presence of their parents, another group plays unsupervised, and another group plays in front of classmates. He breaks the observation period into twenty 1-minute segments and records whether a child is engaging in rough-and- tumble play in a segment. The number of segments with rough-and-tumble play is calculated for each child. The alpha used was .05.

Because there is one independent variable, and three levels, the best statistical test to conduct on this data is a one-way ANOVA. The dependent variable is measured according to a ratio scale of measurement, so based on the independent and dependent variables used, a(n) ___(1)___ would be an inappropriate test to conduct. The effect of the independent variable is indicated by the test statistic’s ___(2)___ variation caused by the ___(3)___. A weak effect of the independent variable produces a test statistic most likely closest to one. If a statistically significant effect is found, the researcher would then conduct a post-hoc test for the least ___(4)___ to detect differences among pairs of means. If Dr. A wanted to examine the effect of social environment and age of child on play behavior in a future study, he would be using a ___(5)___ design and a two-way ANOVA would be the appropriate statistical analysis to conduct.

Answer 1

1 : experimental design

2: called F-test

3: dependent variable

4: significant difference

5: factorial

an experimental design would be an inappropriate test to conduct. The effect of the independent variable is indicated by the test statistic’s called F-test variation caused by the dependent variable. A weak effect of the independent variable produces a test statistic most likely closest to one. If a statistically significant effect is found, the researcher would then conduct a post-hoc test for the least significant difference to detect differences among pairs of means. If Dr. A wanted to examine the effect of social environment and age of child on play behavior in a future study, he would be using a factorial design and a two-way ANOVA would be the appropriate statistical analysis to conduct.