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What are the common quotas used to achieve a nationally representative sample?

We recommend using country-specific quotas to achieve a nationally representative sample. These quotas cover ideal sample proportions by gender, age, and location.

We have compiled information on the most commonly used quotas used to achieve a nationally representative sample for the following countries:

🇬🇧 UK

Gender
Female50%
Male50%
Age
18-2413%
25-3416%
35-4420%
45-5416%
55-7535%
Location
South East14%
Greater London13%
North West11%
East Anglia9%
Midlands16%
South West8%
Yorkshire and Humberside8%
North East4%
Ireland3%
Scotland8%
Wales5%

🇪🇸 Spain

Gender
Female50%
Male50%
Age
18-2917%
30-3922%
40-4921%
50-5915%
60-6912%
70+13%
Location
Andalucia19%
Aragon3%
Castilla y Leon5%
Castilla-La Mancha4%
Cataluna16%
Comunidad Valenciana11%
Euskal Autonomia Erkidegoa5%
Galicia6%
Islas Canarias5%
Madrid14%
Others13%

🇯🇵 Japan

Gender
Female51%
Male49%
Age
20-3428%
35-4427%
45-5426%
55-6419%
Location
Chubu17%
Chugoku6%
Hokkaido4%
Kanto33%
Kinki18%
Kyushu11%
Shikoku4%
Tohoku7%

🇦🇺 Australia

Gender
Female49%
Male51%
Age
18-2921%
30-3918%
40-4918%
50-5917%
60-6913%
70+13%
Location
Sydney22%
NSW Regional12%
Melbourne20%
VIC Regional7%
Brisbane10%
QLD Regional11%
Perth8%
WA Regional2%
Adelaide6%
SA Regional2%

🇿🇦 South Africa

Gender
Female49%
Male51%
Age
21-3439%
35-4417%
45-5415%
55-6420%
65+9%
Location
Urban67%
Rural33%

🇹🇭 Thailand

Gender
Female50%
Male50%
Age
20-3432%
35-4421%
45-5419%
55+28%
Location
Bangkok78%
Pattaya-Chon Buri8%
Chiang Mai6%
Hat Yai-Songkhla5%
akhon Ratchasima3%

🇮🇳 India*

Gender
Female48%
Male52%
Age
25-3430%
35-4426%
45-5420%
55+24%
Location
Mumbai12%
Delhi14%
Bangalore12%
Kolkata4%
Chennai14%
Ahmedabad2%
Hyderabad10%
Pune5%
Other27%

*India has different legal drinking age in different states, we recommend to uniform qualifying age to start at 25 (which is the highest age for legal drinking in India) to be safe.

🇨🇳 China

Gender
Female49%
Male51%
Age
18-3434%
35-4421%
45-5419%
55+26%
Location
Tier 1 City10%
Tier 2 City9%
Tier 311%
Tier419%
Tier 551%

🇷🇴 Romania

Gender
Female49%
Male51%
Age
18-349%
35-4427%
45-5436%
55+28%
Location
Urban54%
Rural46%

🇭🇷 Croatia

Gender
Female52%
Male48%
Age
18-3429%
35-4419%
45-5418%
55+34%
Location
Urban57%
Rural43%

🇨🇿 Czech Republic

Gender
Female51%
Male49%
Age
18-3430%
35-4419%
45-5418%
55+33%
Location
Urban74%
Rural26%

🇭🇺 Hungary

Gender
Female52%
Male48%
Age
18-3430%
35-4418%
45-5418%
55+34%
Location
Urban72%
Rural28%

This question from our users was answered on 9 June 2021. If there is anything else you'd like to know, please do not hesitate to contact us.