1. Compute the Spearman's Rho Coefficient for the following data: n = 8 and ΣD² = 20. a. 0.91 b. 0.87 c. 0.76 d. 0.52 2. An education researcher wishes to determine the extent of relationship of the results between the reading comprehension test (x) and the vocabulary test (y) among 12 students. The data shows the following values: Σx = 76, Σy = 119, Ex^2 = 678, Ey^2 = 1561, Σxy = 724. What is the value of r? a. -0.11 b. -0.24 c. 0.25 d. 0.32 3. Given: X = 49, X = 52, s = 2.1. What is the coefficient of skewness (sk)? a. -4.29 b. -1.43 c. 1.43 d. 4.29 4. A survey of 40 men regarding their shoe sizes (x) and their heights (y) were obtained. What is the likely height of a man with a shoe size of 10 based on the obtained regression equation, y = 130.4 + 4.7x? a. 177.4 cm b. 182.1 cm c. 186.8 cm d. 190.3 cm 5. The scoring averages (points per game) of the starting lineup of a basketball team are as follows: 6.2, 11.4, 18.3, 22.9 and 14.8. What is the standard deviation of their averages? a. 7.14 b. 6.39 c. 5.72 d. 5.22 6. A street-level road traffic estimates has been conducted at the intersection from Monday to Friday. The following data shows the result: 48, 52, 40, 55, 60. What is the average daily flow for the week? a. 45 b. 48 c. 51 d. 54 7. In a classroom, there are several students having the same first name: Richard, 4; Liza, 2; James, 3; and Kathryn, 5. Which name may be associated to the mode of the class? a. Richard b. Liza c. James d. Kathryn

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

1. Compute the Spearman's Rho Coefficient for the following data: n = 8 and ΣD² = 20. a. 0.91 b. 0.87 c. 0.76 d. 0.52 2. An education researcher wishes to determine the extent of relationship of the results between the reading comprehension test (x) and the vocabulary test (y) among 12 students. The data shows the following values: Σx = 76, Σy = 119, Ex^2 = 678, Ey^2 = 1561, Σxy = 724. What is the value of r? a. -0.11 b. -0.24 c. 0.25 d. 0.32 3. Given: X = 49, X = 52, s = 2.1. What is the coefficient of skewness (sk)? a. -4.29 b. -1.43 c. 1.43 d. 4.29 4. A survey of 40 men regarding their shoe sizes (x) and their heights (y) were obtained. What is the likely height of a man with a shoe size of 10 based on the obtained regression equation, y = 130.4 + 4.7x? a. 177.4 cm b. 182.1 cm c. 186.8 cm d. 190.3 cm 5. The scoring averages (points per game) of the starting lineup of a basketball team are as follows: 6.2, 11.4, 18.3, 22.9 and 14.8. What is the standard deviation of their averages? a. 7.14 b. 6.39 c. 5.72 d. 5.22 6. A street-level road traffic estimates has been conducted at the intersection from Monday to Friday. The following data shows the result: 48, 52, 40, 55, 60. What is the average daily flow for the week? a. 45 b. 48 c. 51 d. 54 7. In a classroom, there are several students having the same first name: Richard, 4; Liza, 2; James, 3; and Kathryn, 5. Which name may be associated to the mode of the class? a. Richard b. Liza c. James d. Kathryn

Definition Definition Measure of central tendency that is the value that occurs most frequently in a data set. A data set may have more than one mode if multiple categories repeat an equal number of times. For example, in a data set with five item—3, 5, 5, 29, 473—the mode is 5 because it occurs twice and no other value occurs more than once. On a histogram or bar chart, the element with the highest bar represents the mode. Therefore, the mode is sometimes considered the most popular option. The mode is useful for nominal or categorical data (e.g., the most common color car that users purchase), but it is problematic for continuous data because it is more likely not to have any value that is more frequent than the other.

Expert Solution