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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 main effect for factor A but not factor B?     B1 B2 A1 19 15 A2 12 ?

A sample of n = 25 scores has M = 20 and s2 = 9.  What is the sample standard deviation?

The following table shows the results of a between-subjects ANOVA. Based on this table, what is the value for eta squared (η2), the percentage of variance accounted for?      Source                         SS        df        MS            Between Groups   26         2          8                Within Groups       74        21         4                Total                           100        23       

Which of the following is true for most distributions?

For the regression equation, = –2X + 6, what can be determined about the correlation between X and Y?

Noah took 6 tests over the course of the school year for a stats class. He was wondering what his mean score was for all 6 tests. He got 88, 98, 100, 72, 94, and 65. Find the mean of the data.

In a population of N = 6, five of the individuals all have scores that are exactly 1 point above the mean.  From this information, what can you determine about the score for the sixth individual?

For a sample of n = 16 scores, how many scores are used to calculate the sample variance?

The following data were obtained from a repeated-measures research study.  What is the value of MD for these data?Subject   1st    2nd#1            10        15#2              4           8#3              7           5#4              6         11

A research study wants to know if more time spent on the internet increases the amount of money spent on online shopping. 20 participants are asked to spend time online shopping. Ten people are told to be online for 1 hour, and the other ten are told to be online for 1.5 hours. The two groups are then compared to see which spent the most money. What is the dependent variable?