The file 'Energy' contains the per capita energy consumption (in kilowatt-hours), for each of the 50 states and the District of Columbia during a recent year. a) Compute the mean, variance, and standard deviation for the population. b) What proportion of these states has per capita energy consumption within + or — 1 standard deviation of the mean, within + or - 2 standard deviations of the mean, and within + or - 3 standard deviations of the mean? c) Compare your findings with what would be expected based on the empirical rule. d) Repeat a) through c) with the District of Columbia removed. Have the results changed?
The file 'Energy' contains the per capita energy consumption (in kilowatt-hours), for each of the 50 states and the District of Columbia during a recent year. a) Compute the mean, variance, and standard deviation for the population. b) What proportion of these states has per capita energy consumption within + or — 1 standard deviation of the mean, within + or - 2 standard deviations of the mean, and within + or - 3 standard deviations of the mean? c) Compare your findings with what would be expected based on the empirical rule. d) Repeat a) through c) with the District of Columbia removed. Have the results changed?
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 file 'Energy' contains the per capita energy consumption (in kilowatt-hours), for each of the
50 states and the District of Columbia during a recent year.
a) Compute the mean, variance, and standard deviation for the population.
b) What proportion of these states has per capita energy consumption within + or - 1 standard
deviation of the mean, within + or -2 standard deviations of the mean, and within + or -3
standard deviations of the mean?
c) Compare your findings with what would be expected based on the empirical rule.
d) Repeat a) through c) with the District of Columbia removed. Have the results changed?
Transcribed Image Text:State
Wyoming
D.C
Kentucky
South Caro
Texas
North Caro
West Virgin
Ohio
Alabama
Louisiana
Idaho
Tennessee
Washingtor 16357
Indiana
Mississippi
18277
15885
Arkansas
Nevada
Georgia
North Dako
Oregon
Delaware
Oklahoma
Montana
Nebraska
Virginia
lowa
Kansas
Missouri
Florida
Wisconsin
Arizona
Minnesota
Maryland
Illinois
South Dak
Kilowatt Hours
24567
20073
Michigan
New Mexic
Utah
Colorado
Maine
Vermont
Connecticu
19970
18885
18399
17902
17453
10993
15595
15050
15033
15022
14593
14511
14465
14380
14172
13926
13918
13743
13691
13536
13255
12743
12614
12393
12103
12067
12010
11425
10903
10806
10491
10344
10273
10002
9532
9309
9081
8867
8543
8095
New Jerse
Alaska
New Hamp
Pennsylvar 8006
Hawaii
7913
Massachus 7744
New York 7135
Rhode Isla 6716
California 6396
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Step 1: State the given information.
VIEWStep 2: Calculate the mean, variance and standard deviation of energy consumption (in kilowatt-hours).
VIEWStep 3: Calculate the proportion within ±1, ±2, and ±3 standard deviation of the mean.
VIEWStep 4: Compare the findings in part (b) with what would be expected based on the empirical rule.
VIEWStep 5: Repeat parts a) to c)with District of Columbia removed. and check have any change in the result.
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