Social Science Statistics Fall 2022 Homework #4 Dr. Hitlan Name Multiple Choice (1-point each) 1. Scores from a statistics exam are reported as deviation scores. Which of the following deviation scores indicates a higher position in the class distribution? a. +8 b. 0 C. -8 d. cannot determine without more information 2. Which of the following contains an expression of variability about Joe? a. "Sometimes Joes ideas are great and sometimes they're off the wall." b. "For his dental appointments, Joe is always late." c. "Joe is solid as a rock, you can count on him." d. "He's absolutely the most disciplined person on the staff." 3. For a population of N= 10 scores, you first measure the distance between each score and the mean, then square each distance and find the sum of the squared distances. At this point you have calculated a. SS b. the population variance c. the population standard deviation d. none of the other choices is correct 4. For a particular sample, the largest distance (deviation) between a score and the mean is 1 1 points. The smallest distance between a score and the mean is 4 points. Therefore, the standard deviation a. will be less than 4 b. will be between 4 and 11 c. will be greater than 11 d. It is impossible to say anything about the standard deviation. 5. A population of scores has u = 50 and or = 5. If every score in the population is multiplied by 3, then what are the new values for the mean and standard deviation? a. H = 50 and a = 5 b. H = 50 and a = 15 C. u = 150 and a = 5 du = 150 and a = 15 6. You will get a negative number as a standard deviation a. when all scores are negative; b. when the mean of the scores is negative; c. either a or b above is sufficient; d. under no circumstances; standard deviations are always positive numbers. 7. From all the employees in a company, a small group was selected to participate in a study of employee satisfaction. The results of the study were to be used to make decisions about all the employees of the company. On one measure the following summary numbers were obtained: EX = 30, EX = 350, n = 12. Calculate the appropriate standard deviation. a. 5.00; b. 4.79; c. 22.92; d. these summary numbers do not result in a real standard deviation