Answered: Group problems: tisi ti esob ndw bne…

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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Question

Transcribed Image Text:Group problems: tlot ti eoob tedw bne snil de gonod to cgole odi ri todW d) 1. Since the 1990s there have been many high profile cases of violence in schools. The extensive media coverage of these events may convince people that school crime has increased. The data set below is from the National Center for Educational Statistics (NCES). (a) Does the data at the right suggest that school crime is increasing or decreasing? How do you know? Total school crimes in the US (in millions) Year odt joa 1992 X = 0 3.409 1993 3.795 1994 3.800 1995 1996 3.468 (b) Use technology to plot this data. Does the data look roughly (but not necessarily perfectly) linear? 3.163 1997 2.721 onil 1998 2.716 1999 2000 2001 2.490 1.946 2.001 (in millions). Find the linear regression function to model 2002 2004 1.754 (c) Let y = c(x) represent the total school crimes in the Us %3D this data. Record your equation here, rounding values to 4 2002 2005 2006 1.930 1.446 1.488 decimal places. 1.676

Expert Solution

Step 1

(a) Correlation coefficient between these two variables is -0.9555 which indicates high negative correlation between these two variables hence school crime is decreasing.