Exam 14: The Two-Way Analysis of Variance

If you are interested in how well students perform on a standardized math achievement test after they have completed a six-week math unit in either a computer-assisted class,a videotaped course,or a regular classroom,and you also want to include a factor for sex (boys vs.girls),what is the dependent variable?

In statistical terminology,when we "collapse across a factor," we average together all the scores

If and ,what is ?

The "adjusted k" in Tukey's HSD is adjusted to take into account

In a two-way ANOVA,the values of n and k

In any two-way ANOVA,if is significant,which of the following is true?

A study investigated the influence of relaxation training (relaxation training vs.no relaxation training)and type of sleep-inducing product (Brand X vs.Brand Y)on the amount of time it takes a person to fall asleep (in minutes).Partial results from the data analysis are in the table below.Compute the effect size for the relaxation factor.

In a two-way ANOVA,the main effect of a factor is the

If you have a two-way ANOVA with a 2  3 design,and the A main effect is the only significant ,which of the following would you do?

We do not compare cell means in post hoc analysis when the cells are confounded because

Which of the following is not one of the assumptions we must satisfy when conducting a two-way,between-subjects ANOVA?

The for a main effect of a two-way ANOVA is that differences in the sample means among the various levels are due to

The larger the value of ,

For Factor A,you have timed the rate at which participants can solve puzzles under three conditions of noise: high,medium,and low.In addition,for Factor B the participants have received either no caffeine or a high level of caffeine (equivalent to 4 cups of coffee).What kind of design do you have?

The denominator in all the F ratios in a two-way factorial ANOVA is

To graph an interaction,place the _____ on the X axis,place the _____ along the Y axis,and show the second factor by _____.