David Pollard
Statistics 230/530
17 Jan 2003
The 2000 Census collected data from all households in the United States.
Information such as age, race, and gender was recorded for all individuals.
Information such as household income was collected for only a sample (about one in six)
of households. The data are available online from http://www.census.gov.
For this report I use data, for each of the 27 towns in New Haven County, from table P6
of summary file 3. For each geographical region selected, the table gives numbers of
persons in seven racial categories:
White alone
Black or African American alone
American Indian and Alaska Native alone
Asian alone
Native Hawaiian and Other Pacific Islander alone
Some other race alone
Two or more races
I have abbreviated these descriptions to W, B, Amer, Asian, Nat, other, multi in the
following tabulation of percentages for each town.
town
Ansonia
Beacon Falls
Bethany
Branford
Cheshire
Derby
East Haven
Guilford
Hamden
Madison
Meriden
Middlebury
Milford
Naugatuck
New Haven
North Branford
North Haven
Orange
Oxford
Prospect
Seymour
Southbury
Wallingford
Waterbury
West Haven
W
85
96
96
94
89
91
93
95
78
97
80
95
93
91
44
97
93
94
98
96
95
97
94
67
74
B
8
1
1
2
5
4
2
1
15
0
7
0
2
3
37
1
3
1
1
1
1
1
1
16
16
Amer
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
0
0
0
Asian
1
2
2
3
3
2
2
2
4
1
1
1
3
3
4
1
3
3
0
1
2
1
2
2
3
Nat
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
other
2
0
0
0
2
2
1
1
2
1
8
1
1
1
11
1
0
0
0
0
1
0
1
11
4
multi
2
1
1
1
1
1
1
1
2
1
3
1
1
2
4
1
1
1
0
2
1
1
1
4
3
total
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
Now make some wise observations. Maybe comment on the towns that have high
percentages of black population. (How do they compare with state or national averages?)
Questions.
Is the table a good way to convey racial differences across towns?
Would some sort of plot be better?
Would more decimal places help or hinder?
Is the “total” column needed?
Would it help to have a final row showing the percentages for the whole county?
Would it help to have some indication of total population size for each town?
What are those big numbers in the “other” column? Explanation needed.
Why are there no Hispanics?
Why don’t the rows actually sum to 100%?
How could I check that I haven’t made a blunder somewhere? For example, I might have
mixed up the column headings, or I might have selected the wrong table.