Blog

If the following seven scores are ranked from smallest (#1) to largest, then what rank should be assigned to a score of X = 1?Scores:  1, 1, 1, 1, 3, 6, 6, 6, 9

What is the value of Σ(X + 1) for the following scores?  Scores: 1, 0, 1, 4

Two samples from the same population both have M = 84 and s2 = 20; however, one sample has n = 10 and the other has n = 20 scores.  Both samples are used to evaluate a hypothesis that µ = 80 and to compute Cohen’s d.  How will the outcomes for the two samples compare?

If an entire population with µ = 60 and σ = 8 is transformed into z-scores, then the distribution of z-scores will have a mean of ____ and a standard deviation of ____.

What are the possible values for a Pearson correlation coefficient, r?

Two samples from the same population both have M = 84 and s2 = 20; however, one sample has n = 10 and the other has n = 20 scores.  Both samples are used to evaluate a hypothesis that µ = 80 and to compute Cohen’s d.  How will the outcomes for the two samples compare?

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, factor B, and an interaction?     B1 B2 A1 22 18 A2 18 ?

A positive correlation indicates that ________

What is the critical value for a correlation with n=77, one-tailed, and an alpha level of 0.01?

A researcher collects data for participants of ages 8 to 18 years old and creates a regression equation of y = 0.25x + 2, where x = age in years and y = the average number of hours spent viewing technology screens. According to this equation, what is the average number of hours a 30-year-old spends viewing screens?