Chapter 13 LearnSmart

In order to determine if there is a difference between the means of 3 or more populations, we use

analysis of variance

one way ANOVA test is better than using a series of two-sample tests because conducting a

series of two-sample tests inflates the risk of committing a Type 1 error

A one-way ANOVA test is based on the

Fdf1,df2 distribution

which method ensures that the probability of a Type 1 error equals alpha

Turkey;s HSD method

in order to determine if there is a difference between the means of 3 or more populations, we use

analysis of variance

The ____ is a weighted sum of the sample variances of each treatments

error sum of squares

In a two-way ANOVA test, the sum of squares Factor B is based on the sum of the squared differences between the mean for each level of factor B and the ____

grand mean

If the selection of one sample doesnt affect the selection of another, then the samples are considered

independent

The one-way analysis of variance(anova) test is used to determine if differences exist between the ____ of three or more populations

means

Performing a one-way ANOVA test, instead of performing a series of two-sample t tests, ____ the risk of incorrectly rejecting the null hypothesis

reduces

if the amount of variability between treatments is significantly greater than the amount of variability within treatments, then we

reject the null hypothesis of equal population means

one-way ABOVA analysis does not require that all mean differ from one another

true

In one-way Anova within treatments variability is based on the

variability within each sample

two independent estimates of the common population variation o^2, are estimated, these are called

between-treatments variability and within-treatments variability

In two-way ANOVA, if units within each block are randomly assigned to each of the treatments, then the design of the experiment is referred to as a

randomized block design