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1. Calculate the sample number by age and gender

in accordance with this link, I have increased the ranges of the age groups. so could it be representative sencod you? Thank you
2. Calculate the sample number by age and gender

Thank you very much for your reply. So do I have to use this data to find the sample? https://napoleoncat.com/stats/facebook-users-in-italy/2021/10/ So for example, Facebook users are 41780100, the sample always remains 385, so for males between 25 and 34 years (12.2%) there are 46.2 polls. So...
3. Calculate the sample number by age and gender

A thousand thanks! Looking at this page I came to these results. https://dati.istat.it/Index.aspx?QueryId=42869 I realized that in some cases I already have more completed surveys than required, while in some cases the number coincides. For example: Females between 20 and 25 must be...
4. Calculate the sample number by age and gender

Thanks for your answer. I am doing the survey via facebook and from what I see I have uniformly covered the Italian territory. What I would like to discover are habits in free time (cinema, sport, reading, drawing, etc.) divided by sex and age groups
5. Calculate the sample number by age and gender

Hello everyone! Beginner question: I used this site to calculate a survey sample: https://www.surveymonkey.com/mp/sample-size-calculator I compiled it like this for a survey of italian's habit: Population size (Italian): 60,000,000 Confidence level: 95% Margin of error: 5% The result is 385...