The data above yields the following information: Y 6 Σ(Sums): b = a = X 10 68 50 18 35 7 188 NEXY – (EX)(EY) NEX² - (EX)² ΣΥ - ΕΣΧ N = 6.83 30 45 15 50 4 150 = 0.58 X² 100 4624 2500 324 1225 49 8822 Y² 36 900 2025 225 2500 16 5702 XY 60 2040 2250 270 1750 28 6398 e. Based on these values, what is the equation of the line that best summarizes the relationship between X and Y? f. How would a 5 percentage point decrease in gun ownership affect a city's violent crime rate? g. If you know that Providence, Rhode Island has a gun ownership rate of 22%, what is your best prediction about that city's violent crime rate?
The data above yields the following information: Y 6 Σ(Sums): b = a = X 10 68 50 18 35 7 188 NEXY – (EX)(EY) NEX² - (EX)² ΣΥ - ΕΣΧ N = 6.83 30 45 15 50 4 150 = 0.58 X² 100 4624 2500 324 1225 49 8822 Y² 36 900 2025 225 2500 16 5702 XY 60 2040 2250 270 1750 28 6398 e. Based on these values, what is the equation of the line that best summarizes the relationship between X and Y? f. How would a 5 percentage point decrease in gun ownership affect a city's violent crime rate? g. If you know that Providence, Rhode Island has a gun ownership rate of 22%, what is your best prediction about that city's violent crime rate?
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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Transcribed Image Text:The data above yields the following information:
Σ(Sums):
b=
a =
X
10
68
50
18
35
7
188
ΝΣΧΥ – (ΣΧ. ΣΥ)
NEX² - (EX)²
ΣΥ - ΙΣΧ
N
=
6.83
Y
6
30
45
15
50
4
150
=
0.58
X²
100
4624
2500
324
1225
49
8822
Y²
36
900
2025
225
2500
16
5702
XY
60
2040
2250
270
1750
28
6398
e. Based on these values, what is the equation of the line that best summarizes the relationship
between X and Y?
f. How would a 5 percentage point decrease in gun ownership affect a city's violent crime rate?
g. If you know that Providence, Rhode Island has a gun ownership rate of 22%, what is your best
prediction about that city's violent crime rate?
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