In a two-way ANOVA, a blocking variable is used to, Multiple Choice decrease the treatment sum of squares decrease the error sum of squares increase the treatment sum of squares increase the error sum of squares
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Q: Regarding one-way ANOVA, fill in the blanks A measure of variation within the samples is called…
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- The null hypothesis for ANOVA states that a. the variables are independent b. the variables are related c. the population means are equal d. the population means are differentUnknowingly, a majority of the people chosen for a researcher's sample live in cold-weather areas like Alaska. The results of his survey about clothing styles are affected by this because the sample overwhelmingly choses styles which are warm in cold climates. What is the term for this situation? Matched Pairs Double-Blind Bias Randomized Block Voluntary ResponseTeachers told their students that they would either receive praise, candy, or money after completing their homework on time. Below you will find a table of the number of homework completed by 15 children in one week. In addition, you will find the Means, Totals, and Sum of Squares values below each column for each treatment. Is there enough evidence to show that the type of reward affects the number of homework completed? Compute a one-way ANOVA following the steps below. Treatment: Praise Candy Money 0 2 2 0 4 3 2 0 1 1 1 4 2 3 5 M1= 1 M2= 2 M3= 3 T= 5 T=10 T= 15 SS1= 4 SS2=10 SS3=10 Compute the following values: N = # of total scores = G = ∑T= grand total of all scores= ∑X2= k = # of conditions = n = # per group = For the data above in the table, calculate SSTotal: SStotal = ΣX2 – (G2/N) = Now, calculate SSwithin: SSwithin = ΣSSeach treatment = Finally, calculate SSbetween:…
- One-way ANOVA is used to test statistical hypothesis concerning a. both means and variances b. population variances c. population means d. population proportionsWith one-way ANOVAs, the null hypothesis is represented by which of the following? b0 the grand mean the total sum of squares the model sum of squaresWhich outcome is expected if the null hypothesis is true for an analysis of variance? a. SSbetween should be about the same size as SStotal. b. SSbetween should be about the same size as SSwithin. c. MSbetween should be about the same size as MStotal. d. MSbetween should be about the same size as MSwithin.
- When conducting an ANOVA, what is the purpose of an APA table? Group of answer choices To see exactly how big of an effect the treatment had To see whether there is a pattern to the variability in the sample means To see whether you reject H0 and conclude the factor had an overall effect To see which pairs of sample means are significantly different from each otherIn general, why does using a repeated-measures ANOVA increase statistical power compared to using a one-way between-groups ANOVA? Options: a. MSbetween is lower b. MSerror is higher c. MSerror is lower d. Using a repeated-measures ANOVA does not increase power compared to using a one-way between-groups ANOVA e. MSbetween is higherIn one-way ANOVA, identify a statistic that measures a. the variation among the sample means. b. the variation within the samples.
