Questions from Essentials of Statistics

Q: A research study comparing three treatment conditions produces T = 20 with

A research study comparing three treatment conditions produces T = 20 with n = 4 for the first treatment, T = 10 with n = 5 for the second treatment, and T = 30 with n = 6 for the third treatment. Cal...

Q: For the following set of scores: / a.

For the following set of scores: a. Place the scores in a frequency distribution table. Include columns for proportion and percentage in your table. b. n = ?

Q: Weinstein, McDermott, and Roediger (2010) published an experimental

Weinstein, McDermott, and Roediger (2010) published an experimental study examining different techniques that students use to prepare for a test. Students read a passage, knowing that they would have...

Q: A research study comparing three treatment conditions produces T = 28 with

A research study comparing three treatment conditions produces T = 28 with n = 7 for the first treatment, T = 32 with n = 8 for the second treatment, and T = 108 with n = 9 for the third treatment. Ca...

Q: The following values are from an independent-measures study comparing three

The following values are from an independent-measures study comparing three treatment conditions. a. Compute the variance for each sample. b. Compute MSwithin, which would be the denominator of the F-...

Q: A research report from an independent-measures study states that there

A research report from an independent-measures study states that there are significant differences between treatments, F(4, 40) = 3.45, p < .05. a. How many treatment conditions were compared in the s...

Q: Several factors influence the size of the F-ratio. For

Several factors influence the size of the F-ratio. For each of the following, indicate whether it would influence the numerator or the denominator of the F-ratio, and indicate whether the size of the...

Q: A researcher used ANOVA and computed F = 4.25 for

A researcher used ANOVA and computed F = 4.25 for the following data. a. If the mean for Treatment III were changed to M = 25, what would happen to the size of the F-ratio (increase or decrease)? Expl...

Q: The following data were obtained from an independent-measures study comparing

The following data were obtained from an independent-measures study comparing three treatment conditions. a. Calculate the sample variance for each of the three samples. b. Use an ANOVA with a = .05 t...

Q: The following data were observed in an independent-measures study comparing

The following data were observed in an independent-measures study comparing three treatment conditions. a. Use an ANOVA with a = .05 to determine whether there are any significant differences among th...