Table:
0
A
B
C
D
E
F
1
Track Name
Location
Length
Seating
Year Opened
Year Acquired [A ]
2
Auto Club Speedway
Fontana, CA
miles (km)
92,000
1997
1999
3
Chicagoland Speedway
Joliet, IL
miles (km)
75,000
2001
2007
4
Darlington Raceway
Darlington, SC
miles (km)
63,000
1950
1982
5
Daytona International Speedway
Daytona Beach, FL
miles (km)
168,000
1959
1959
6
Homestead-Miami Speedway
Homestead, FL
miles (km)
65,000
1995
1999
7
Kansas Speedway
Kansas City, KS
miles (km)
81,687
2001
2001
8
Martinsville Speedway
Ridgeway, VA
miles (km)
65,000
1947
2004
9
Michigan International Speedway
Brooklyn, MI
miles (km)
137,243
1968
1999
10
Phoenix International Raceway
Avondale, AZ
miles (km)
76,812
1964
1997
11
Richmond International Raceway
Richmond, VA
miles (km)
107,097
1946
1999
12
Route 66 Raceway
Joliet, IL
miles (km) dragstrip
30,000
1998
2007
13
Talladega Superspeedway
Talladega, AL
miles (km)
175,000
1969
1969
14
Watkins Glen International
Watkins Glen, NY
miles (km) road course
41,000
1948
1997

Questions and formulas:
Question: What is the year opened for Chicagoland Speedway with a seating smaller than 75,000?
Formula: AVERAGE(FILTER(E1,(A1="chicagoland speedway")*(D1<"75,000")))
Formula2: AVERAGE(FILTER(E2:E14,(A2:A14="chicagoland speedway")*(D2:D14<"75,000")))
Level: easy