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Leanne Langlois
 Post subject: Calculating mean age from age ranges in a survey
PostPosted: Thu Mar 26, 2009 6:30 pm 
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Posts: 3
I would like to calculate the mean age of respondents to a survey. The ages are in ranges with the top range being open-ended (75 yrs+). How should I be calculating this?
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Fierce
 Post subject: Re: Calculating mean age from age ranges in a survey
PostPosted: Thu Mar 26, 2009 8:30 pm 
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Location: Belo Horizonte, Brasil
When using ranges, the common way of calculating means is using the mean of the range (0-15 would be 7,5). Compute a new varaible based on that (TRANSOFMR>COMPUTE VARIABLES, use the age variable as an IF condition) and take the mean of the new one.
For open-ended intervals, The value itself is mostly used (75+ would be 75).

If all you have about age (or all that can lead to age) is that, I can't see a better way of doing it.

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NOTE: "Please read the Posting Guidelines and always tell us your OS, the SPSS version and some information about your data!" - by statman.

Disponível em português (mas prefira inglês para que outros também entendam a solução).

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Philip30
 Post subject: Re: Calculating mean age from age ranges in a survey
PostPosted: Tue Jul 20, 2010 3:08 am 
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Could someone please vet that calculation for me to confirm its veracity? Is it appropriate to use this technique in a case such as this?

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statman
 Post subject: Re: Calculating mean age from age ranges in a survey
PostPosted: Tue Jul 20, 2010 1:09 pm 
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Philip30, not clear. Can you please rephrase

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