1. Summarize the cost by calculating the mean and standard deviation for each region 2. Calculate...

1. Summarize the cost by calculating the mean and standard deviation for each region

2. Calculate the Standard deviation for all five regions

3. Use a bar graph for this data set and show the five averages on the graph

4. List all the averages and standard deviations of five regions for comparison

Cost due to traffic congestion, per registered vehicle.

      City      Cost Traffic
Northeastern cities   Baltimore, MD   530
       Boston, MA   880
       Hartford, CT   250
       New York, NY   1,090
       Philadelphia, PA   420
       Pittsburgh, PA   400
       Washington, DC   1,420
Midwestern cities   Chicago, IL   570
       Cincinnati, OH   200
       Cleveland, OH   140
       Columbus, OH   230
       Detroit, MI   530
       Indianapolis, IN   130
       Kansas City, MO   160
       Louisville, KY   190
       Milwaukee, WI   370
       Minneapolis-St. Paul, MN   270
       Oklahoma City, OK   190
       St. Louis, MO   540
Southern cities   Atlanta, GA   640
       Charlotte, NC   390
       Ft. Lauderdale, FL   290
       Jacksonville, FL   400
       Memphis, TN   140
       Miami, FL      680
       Nashville, TN   340
       New Orleans, LA   340
       Norfolk, VA   390
       Orlando, FL   420
       Tampa, FL   310
Southwestern cities   Albuquerque, NM   210
       Austin, TX      410
       Corpus Christi, TX   50
       Dallas, TX      750
       Denver, CO   420
       El Paso, TX   120
       Fort Worth, TX   420
       Houston, TX   750
       Phoenix, AZ   630
       Salt Lake City, UT   90
       San Antonio, TX   290
Western cities   Honolulu, HI   470
       Los Angeles, CA   980
       Portland, OR   500
       Sacramento, CA   280
       San Bernardino-River, CA   1,320
       San Diego, CA   480
       San Francisco-Oakland, CA   930
       San Jose, CA   960
       Seattle-Everett, WA   880

Expert Solution

Result:

1. Summarize the cost by calculating the mean and standard deviation for each region

Descriptive statistics

	Northeastern	Midwestern	Southern	Southwestern	Western
n	7	12	11	11	9
mean	712.86	293.33	394.55	376.36	755.56
sample standard deviation	428.47	165.66	152.08	252.56	336.46

2. Calculate the Standard deviation for all five regions

Descriptive statistics

	All regions
n	50
mean	475.80
sample standard deviation	314.83

3. Use a bar graph for this data set and show the five averages on the graph

4. List all the averages and standard deviations of five regions for comparison

Descriptive statistics

	Northeastern	Midwestern	Southern	Southwestern	Western
n	7	12	11	11	9
mean	712.86	293.33	394.55	376.36	755.56
sample standard deviation	428.47	165.66	152.08	252.56	336.46

orchestra answered 1 year ago

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