Timeline for How to approximate sample mean age of people in a survey from grouped data
Current License: CC BY-SA 4.0
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| May 21, 2020 at 7:25 | comment | added | Dale C | @BruceET Yeah you're right, my solution is actually pretty weak as it is based on the assumption that the distribution of the data inside the intervals has a known expectation. If it this is known it is as easy as above. However you're right, if it is not then it is not as easy at all. | |
| May 21, 2020 at 5:27 | comment | added | BruceET | I took it from the question that only interval boundaries and frequencies are known. If there is a way to find the means of observations in each interval (not just the midpoints as in my answer), then your method is fine. But I don't think that information is available. Interesting idea anyway. (+1) | |
| May 21, 2020 at 4:13 | history | answered | Dale C | CC BY-SA 4.0 |