Table:
0
A
B
C
D
E
F
G
H
1
#
Name
Name (English)
Population 2008-07-01
Area (km²)
Pop./ km²
ISO 3166-2
Administrative centre
2
1
Höfuðborgarsvæði
Capital Region
200969
1062
167.61
IS-1
Reykjavík
3
2
Suðurnes
Southern Peninsula
21431
829
20.18
IS-2
Keflavík
4
3
Vesturland
Western Region
15601
9554
1.51
IS-3
Akranes
5
4
Vestfirðir
Westfjords
7279
9409
0.85
IS-4
Ísafjörður
6
5
Norðurland vestra
Northwestern Region
7392
12737
0.73
IS-5
Sauðárkrókur
7
6
Norðurland eystra
Northeastern Region
28925
21968
1.21
IS-6
Akureyri
8
7
Austurland
Eastern Region
13786
22721
0.52
IS-7
Egilsstaðir
9
8
Suðurland
Southern Region
23972
24526
0.87
IS-8
Selfoss

Questions and formulas:
Question: when administrative centre is egilsstaðir, what is the pop./ km²?
Formula: SUMIFS(F1,H1,"Egilsstaðir")
Formula2: SUMIFS(F2:F9,H2:H9,"Egilsstaðir")
Level: easy
Question: when the name is southern region, what is the administrative centre?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:H1,C1="Southern Region"),8))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:H9,C2:C9="Southern Region"),8))
Level: medium
Question: when the area (km²) is 22721, what is the pop./ km²?
Formula: SUM(FILTER(F1, E1=22721))
Formula2: SUM(FILTER(F2:F9, E2:E9=22721))
Level: easy
Question: What is the max pop of 2008 for selfoss?
Formula: SUMIFS(D1,H1,"Selfoss")
Formula2: SUMIFS(D2:D9,H2:H9,"Selfoss")
Level: easy
Question: When the # is 4, what is the pop./ km²?
Formula: SUM(FILTER(F1, A1=4))
Formula2: SUM(FILTER(F2:F9, A2:A9=4))
Level: easy