Timeline for Regression of two data data sets of the same experiment
Current License: CC BY-SA 3.0
10 events
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| Aug 12, 2015 at 12:47 | comment | added | Ivan | Thanks again, @whuber, you clarified a conceptual problem. It is indeed a $1+\delta/100$ thing, not a constant value, so indeed the two regression lines should not be parallel. The comparison and finding the $\delta$ value problems stand. | |
| Aug 12, 2015 at 12:18 | comment | added | Ivan | I have the same independent variable for both experiments, I´m not regressing the two dependent variables against each other. | |
| Aug 12, 2015 at 12:16 | comment | added | whuber♦ | If you gather the data in two different ways, then you have two variables, not one (or, if you like, two distinct measurements of the same "variable"--but those measurements must be managed and analyzed as two separate variables). But is there some other variable involved in your regressions or are you regressing these variables against each other? | |
| Aug 12, 2015 at 12:13 | comment | added | Ivan | I´m doing a linear regression with only one dependent variable. Having the same phenomena and two different ways of gathering the data, I agree that I have two sets of variables. There is no other variable involved. | |
| Aug 7, 2015 at 14:06 | answer | added | IrishStat | timeline score: 1 | |
| Aug 7, 2015 at 13:29 | comment | added | whuber♦ | Parallel regression lines would suggest that a constant had been added to the values, rather than a constant percentage applied (which would be understood as multiplying each value $y$ by a constant $1 + \delta/100$, where $\delta$ is the percentage). Could you clarify which of these operations you mean? And exactly what "linear regressions" are you performing? Is there another variable involved? | |
| Aug 7, 2015 at 13:23 | history | edited | Ivan | CC BY-SA 3.0 |
Changed title to reflect better the question being asked
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| Aug 7, 2015 at 10:28 | history | edited | Ivan |
edited tags
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| Aug 6, 2015 at 13:35 | review | First posts | |||
| Aug 6, 2015 at 13:36 | |||||
| Aug 6, 2015 at 13:34 | history | asked | Ivan | CC BY-SA 3.0 |