EXAMPLE 3. Sam is interested in predicting the amount of time it takes him to write a report (minutes) based on its word count. He randomly selects 7 reports and records the amount of time it took him to write each report and the corresponding word count. Given the following table of additional information: |1,606 909 1,222,691 130,988 E„(4 – 2)(y, – 9) 298,909 Identify, in words, the dependent variable. O a. X = a report's word count O b. Y = a report's word count O .Y = amount of time it takes Sam to write a report (minutes) o d. X = amount of time it takes Sam to write a report (minutes) Calculate the standard deviation of X. a. 494.5080 b. 417.9356 c. 390.9429 d. None of the other choices
EXAMPLE 3. Sam is interested in predicting the amount of time it takes him to write a report (minutes) based on its word count. He randomly selects 7 reports and records the amount of time it took him to write each report and the corresponding word count. Given the following table of additional information: |1,606 909 1,222,691 130,988 E„(4 – 2)(y, – 9) 298,909 Identify, in words, the dependent variable. O a. X = a report's word count O b. Y = a report's word count O .Y = amount of time it takes Sam to write a report (minutes) o d. X = amount of time it takes Sam to write a report (minutes) Calculate the standard deviation of X. a. 494.5080 b. 417.9356 c. 390.9429 d. None of the other choices
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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