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Recording from a USB Port in RStudio
http://www.talkstats.com/showthread.php/61456-Recording-from-a-USB-Port-in-RStudio?goto=newpost
Wed, 01 Jul 2015 22:03:53 GMTHello All!
I am currently trying to get R to read some voltage data incoming from a DAQ hooked up to my computer by a USB port. I am having...Hello All!
I am currently trying to get R to read some voltage data incoming from a DAQ hooked up to my computer by a USB port. I am having trouble finding code to record from a USB device, let along the voltage information. Does anyone know a good way to record information from a USB and have the raw data get recorded in R?
The end goal is recording time varying voltage with my USB through RStudio.
Hope that helps and if not I can further clarify anything!
Best,
Matt
]]>Rmatt47thttp://www.talkstats.com/showthread.php/61456-Recording-from-a-USB-Port-in-RStudio<![CDATA[[Excel] How to keep track of metrics]]>
http://www.talkstats.com/showthread.php/61455-Excel-How-to-keep-track-of-metrics?goto=newpost
Wed, 01 Jul 2015 19:10:42 GMTI have a data table with 3 Columns that I want to be able to measure the performance for.
Ex.
_Number| Stage | Date/time _
111111 ...I have a data table with 3 Columns that I want to be able to measure the performance for.
Ex.
Number| Stage | Date/time
111111 | First Stage | 06/25/2015 10:00 AM
111111 | Second Stage | 06/25/2015 11:00 AM
111111 | First Stage | 06/26/2015 09:00 AM
111111 | Third Stage | 06/27/2015 10:00 AM
I want to be able to track for each Number, how many times that Number appears in each stage (9 different stages that are written in text format). And the duration the account number is in each stage. There will be hundreds of numbers to track, 9 stages, and obviously time in each stage.
Is this possible? What would the formula be?
]]>Statisticschillzenhttp://www.talkstats.com/showthread.php/61455-Excel-How-to-keep-track-of-metricsIncongruity between t-test and 2x2 repeated measures ANOVA/gain scores t-test/ANCOVA
http://www.talkstats.com/showthread.php/61454-Incongruity-between-t-test-and-2x2-repeated-measures-ANOVA-gain-scores-t-test-ANCOVA?goto=newpost
Wed, 01 Jul 2015 15:54:45 GMTHi,
it's the first time I post here. Forgive me if my English is not always correct.
I want to ask about an incongruity I found when analyzing data from a randomized controlled trial.
I briefly explain the study: pre-post study to assess the efficacy of an intervention in promoting physical fitness; 1 intervention group and 1 control group; physical fitness assessed pre and post the intervention period, for both groups.
Now let's come to the problem:
- running a t-test for intervention group (pre VS post) I found statistically significant difference.
- running a t-test for control group (pre VS post) I did not find statistically significant difference.
So, I could say intervention improved physical fitness, while in control group there were no significant changes in physical fitness.
- but, when running a 2x2 (group x time) repeated measures ANOVA I didn't find any significant difference; the same happened trying to compare gain scores (pre-post change scores) of the 2 groups with a t-test, or when running an ANCOVA on post-scores using pre-scores as covariate.
Can someone explain this to me? Should I consider the results from rm-ANOVA, gain scores t-test and ANCOVA, since the changes in control group were not significant at first while those in the intervention group where significant?
Thanks everyone!
]]>BiostatisticsArtanishttp://www.talkstats.com/showthread.php/61454-Incongruity-between-t-test-and-2x2-repeated-measures-ANOVA-gain-scores-t-test-ANCOVA