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8th-ed Chap 02, Sec 2.2, Problem 018
The accompanying table lists the 2010 median household incomes, rounded to the nearest dollar, for all 50 states and the District of Columbia.
|
State
|
2010 Median Household Income (dollars)
|
|
State
|
2010 Median Household Income (dollars)
|
|
AL
|
40,976
|
|
MT
|
41,467
|
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AK
|
58,198
|
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NE
|
52,728
|
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AZ
|
47,279
|
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NV
|
51,525
|
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AR
|
38,571
|
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NH
|
66,707
|
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CA
|
54,459
|
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NJ
|
63,540
|
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CO
|
60,442
|
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NM
|
45,098
|
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CT
|
66,452
|
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NY
|
49,826
|
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DE
|
55,269
|
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NC
|
43,753
|
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DC
|
55,528
|
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ND
|
51,380
|
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FL
|
44,243
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OH
|
46,093
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GA
|
44,108
|
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OK
|
43,400
|
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HI
|
58,507
|
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OR
|
50,526
|
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ID
|
47,014
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PA
|
48,460
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IL
|
50,761
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RI
|
51,914
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IN
|
46,322
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SC
|
41,709
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IA
|
49,177
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SD
|
45,669
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KS
|
46,229
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TN
|
38,686
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KY
|
41,236
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TX
|
47,464
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LA
|
39,443
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UT
|
56,787
|
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ME
|
48,133
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VT
|
55,942
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MD
|
64,025
|
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VA
|
60,363
|
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MA
|
61,333
|
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WA
|
56,253
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MI
|
46,441
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WV
|
42,839
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MN
|
52,554
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WI
|
50,522
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MS
|
37,985
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WY
|
52,359
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MO
|
46,184
|
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|
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Source: U.S. Census Bureau.
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a. Construct a frequency distribution table using the following classes.
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Median Household Income
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Frequency
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37,000 to 41,999
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42,000 to 46,999
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47,000 to 51,999
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52,000 to 56,999
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57,000 to 61,999
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62,000 to 66,999
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b. Calculate the relative frequency and percentage for each class.
Round your answers for relative frequencies to three decimal places and your answers for percentages to one decimal place.
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Median Household Income
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Relative Frequency
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Percentage
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37,000 to 41,999
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42,000 to 46,999
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|
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47,000 to 51,999
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52,000 to 56,999
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57,000 to 61,999
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62,000 to 66,999
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c. Based on the frequency distribution, do the data appear to be symmetric or skewed?
The data appear to be
.
d. What percentage of these states had an estimated median household income of $47,000 or more?
Round your answer to one decimal place.
% of these states had an estimated median household income of $47,000 or more.
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