Which image describes a Spearman correlation of -1?rOA.B.44221601201004020。00226$

The image corresponding to the correlation ceofficient value neeed to be obtained.

Answered: Which image describes a Spearman…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Use a computer or statistical calculator to calculate the correlation coefficient in parts a through c below. Cost Miles a. The table shows the approximate distance between selected cities and the approximate cost of flights between those cities. Calculate the correlation coefficient between cost and miles. 190 958 413 3095 r= (Round to three decimal places as needed.) 256 1998 90 429 436 3008 b. This table shows the same information, except that the distance was converted to kilometers by multiplying the numbers of miles by 1.609 and rounding to the nearest kilometer. What happens to the correlation coefficient when numbers are multiplied by a positive constant? Cost Kilometers O 190 1541 413 4980 (Round to three decimal places as needed.) 256 3215 90 690 436 4840 A. The correlation is The correlation coefficient remains the same when the numbers are multiplied by a positive constant. B. The correlation is The correlation coefficient increases when the numbers are multiplied by a…
Match each scatterplot shown below with one of the four specified correlations. O O O O O O 8 0% O O 00 00 O Do O O O 8 8 O O 00 o o O 00 a O O O a. 0.31 b. -0.26 c. 0.87 d. -0.82
Given the following set of five ordered pairs, the correlation r equals ______. a.0.3 b.0.6 c.0.9
Suppose the correlation between variables x and y isr = – 1. Also suppose that the data contains the points (6, 14) and (2, 18). Finally, suppose that the x-values in the data set are: æ 2 3 5 6 8 Make a scatterplot of this data set. 20+ 19 18 17 16 15 14 13 12 10 8 6 6
The following statement contains an error. Choose the statement that best explains the error. "The correlation between shoe size and height is 0.87 inches" A. Correlation requires that both of the variables be categorical B. When stating the correlation coefficient, one must state whether it is a positive or negative relationship C. This statement does not tell us whether or not shoe size is correlated with height D. When reporting correlation, one does not report units because correlation has no units E. There is no error in this statement
3. The speed (in miles per hour) of 8 vehicles and their braking distance (in feet) when stopping on a dry surface speed, x braking distance, y 20 30 40 50 50 60 65 70 55 72 75 110 138 162 193 225 type of correlation: Conclusion
1. The table below gives the number of hours a student spent studying for a test and their grade. a.) Draw a scatter plot of the data. Hours Spent Studying 3 2 2 5 1 0.5 4 3 Grade on Exam 84 77 92 70 60 90 75 b.) Draw the best fit line through the points (5,92) and (1, 70). Grade on Exam 90 80 70 60 c.) Is the correlation positive, negative, or none? f.) Write the equation of the best fit line. 50 d.) Find the slope of the best fit line: (5, 92) & (1,70) (round to one decimal) 0 2 4 6 8 10 Hours Spent Studying e.) What does the slope mean? T1-04 Plus TEXAS g.) Predict the grade for a student who studied for 2.5 hours. Is this an extrapolation or interpolation?
Page 34 Compute the correlation coe cient, r, for the following table: X 10 y 5 12 15 16 1 4 6 18 1 9 7 8 1 25 12 14 17 3 6
EXAMPLE Student Scores in Statistics (X) Scores in Physics (Y) The data at the right shows the scores Stephanie Beverly Angel Regine Kim 11 11 of five students in Statistics and 7 8 Physics quizzes. Calculate the 10 12 correlation coefficient. 12 10 4 5 Solution: Steps 1. Construct a table shown on the right side. Solution Student X Y X2 y2 XY Stephanie Beverly Angel Regine Kim 11 11 7 8 10 12 12 10 4 5 2. Complete the table. Square the entries in column X and column Y, and put them under column X² and column Y², respectively. Multiply entries in the X and Y columns and put them under XY column. Student X Y x2 XY Stephanie Beverly Angel Regine Kim 11 11 121 121 121 7 8 49 64 56 10 12 100 144 120 12 10 144 100 120 5 16 25 20 3. Get the sum off all entries in each column. x2 y2 Student Y XY Stephanie 7 11 11 121 121 121 Beverly Angel Regine Kim 8. 49 64 56 10 12 100 144 120 12 10 144 100 120 4 5 16 25 20 Total 44 46 430 454 437 Y XY η ΣΧΥ-ΣΧ ΣΥ V[n EX2 – (E x)²][n£Y² – (E Y)²] 5(437) –…
9. Tell whether the correlation coefficient would be closest to -1, 0 or 1. a. b. с. 150 150 150 100 100 100 50 50 50 0 2 4 6 x 0 2 4 6x 0 2 4 6 x
The strength of the correlation is indicated by a number value and the closer that value is to zero, the weaker the correlation. O True O False
urgen please

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Which image describes a Spearman correlation of -1? A. B. O C. 4 4 140 140 120 100 ✓ 80 60 40 20