Descriptive statistics

Week 4 Option #1: Descriptive Statistics

Complete the following questions in a 1-3 page document formatted per APA Requirements. Be sure to use Version 1 of Online Statistics: An Interactive Multimedia Course of Study (http://onlinestatbook.com/version_1.html)

•Lane, Chapter 1, exercises 18 & 19 (ADHD Treatment Study)

• http://onlinestatbook.com/version_1.html > Chapter: Case studies > H. ADHD Treatment

• 18. (AT#1) What is the independent variable of this experiment? How many levels does it have? (relevant section)

• 19. (AT#2) What is the dependent variable? On what scale (nominal, ordinal, interval, ratio) was it measured? (relevant section)

•Lane, Chapter 2, exercises 13 & 14 (Angry Moods Study)

• http://onlinestatbook.com/version_1.html > Chapter: Case studies > A. Angry Moods

• (AM#14) Create a bar graph comparing the mean Control-In score for the athletes and the non-athletes. What would be a better way to display this data? (relevant section)

• (AM#18) Plot parallel box plots of the Anger Expression Index by sports participation. Does it look like there are any outliers? Which group reported expressing more anger? (relevant section)

•Lane, Chapter 3, exercises 20 & 23 (Angry Moods Study)

• http://onlinestatbook.com/version_1.html > Chapter: Case studies > A. Angry Moods

• (AM#4) Does Anger-Out have a positive skew, a negative skew, or no skew? (relevant section)

• (AM#15) What is the variance of the Control-In scores for the athletes? What is the variance of the Control-In scores for the non-athletes? (relevant section)