Author: Anonymous

What is the critical value for a regression analysis with n=25, 1 predictor variable, and an alpha level of 0.05?

In analysis of variance (ANOVA), the numerator in the F-ratio is _____.

Which of the following symbols identifies the population standard deviation?

One sample has M = 18 and a second sample has M = 14.  If the pooled variance for the two samples is 16, then what is the value of Cohen’s d?

A researcher is interested in Republican, Democratic, and Independent attitudes toward same-sex couples. Data was collected from 60 Republicans, 60 Democrats, and 60 Independents. Each person completed a survey that measured attitudes toward same-sex couples on a scale of -7 (very negative) to +7 (very positive). What test is most appropriate to use to analyze this data?

A researcher would like to evaluate the effect of three new reading program for second-grade students. For the school year, 1/4 of the second graders used program A, 1/4 used program B, 1/4 used Program C, and 1/4 used the current reading program. The researcher plans to use data from this study to test whether the new program has had a significant effect on reading scores. Which of the following hypothesis tests would be appropriate?

The values in the following matrix are treatment means from a two-factor study. One of the means is missing. What value for the missing mean would most likely result in no main effect for factor A?     B1 B2 A1 9 5 A2 7 ?

A sample of n = 8 scores has SS = 50.  If these same scores were a population, then the SS value for the population would be ____.

A Pearson correlation is computed for a sample of n = 18 pairs of X and Y values.  What correlations are statistically significant with a = .05, two tails?

A repeated-measures experiment compares three treatment conditions with a sample of 10 participants.  If the data are analyzed with ANOVA, the analysis would have dftotal = ____.