Questions from Essentials of Statistics

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

For the following set of scores: a. Construct a stem and leaf plot. b. What is the shape of the distribution?

Q: To create the following data we started with the same sample means

To create the following data we started with the same sample means and variances that appeared in problem 29, but doubled the sample size to n = 10. a. Predict how the increase in sample size should a...

Q: The following scores are from an independent-measures study comparing two

The following scores are from an independent-measures study comparing two treatment conditions. a. Use an independent-measures t test with a = .05 to determine whether there is a significant mean diff...

Q: Describe the similarities between an F-ratio and a t statistic

Describe the similarities between an F-ratio and a t statistic.

Q: Define each of the following terms: a. Factor

Define each of the following terms: a. Factor b. Level c. Two-factor study

Q: Most sports injuries are immediate and obvious, like a broken leg

Most sports injuries are immediate and obvious, like a broken leg. However, some can be more subtle, like the neurological damage that may occur when soccer players repeatedly head a soccer ball. To e...

Q: Emoticons, like and , are helpful for expressing emotion in communications

Emoticons, like and , are helpful for expressing emotion in communications that otherwise have limited emotional content (e.g., emails, text messages, and social media posts). Derks, Bos, and von Grum...

Q: You might have heard the claim that students have specific “learning

You might have heard the claim that students have specific “learning styles” and that each student learns best when the method of instruction matches their specific...

Q: In a classic study of the effect of memory on caffeine,

In a classic study of the effect of memory on caffeine, Loke (1988) studied the effect of caffeine on the serial position effect. In memory tests, the serial position effect refers to the observation...

Q: The following results are from an independent-measures, two-

The following results are from an independent-measures, two-factor study with n = 5 participants in each treatment condition. a. Use a two-factor ANOVA with a = .05 to evaluate the main effects and th...