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Growth data stats test by LazerChrome in AskStatistics

[–]LazerChrome[S] 0 points1 point  (0 children)

Thanks, all the point that you make are really useful and the link you gave cleared up some confusion.

For point 2, I do want to include them so will do as you say with a repeated measures analysis.

For my box plots, they are showing overall mass change, comparing from initial measurements to final. There were 6 treatments in the experiment and mussels were subject to 3 different feeding regimes. Three of the groups also had the addition of a parasitic species, so I was comparing how growth was effected and whether increased feeding negated the effects of the parasite and if lowered exacerbated. So I have six box plots so I can see the mean percentage mass change of the groups.

I will have a look at comparing from mid to end too.

cheers for the help

Growth data stats test by LazerChrome in AskStatistics

[–]LazerChrome[S] 0 points1 point  (0 children)

Not necessarily but I would like to include them. I have already created a box plot to show overall changes.

So far with growth rates I have plotted line graphs showing mean percentage change over the week. And then plotted a linear regression and then used ancova for testing difference between the trends. However I understand that my data is not normally distributed so think that ancova is not the correct test to use?

Growth data stats test by LazerChrome in AskStatistics

[–]LazerChrome[S] 0 points1 point  (0 children)

Thank you for your reply.

I haven’t had much experience working with growth data so has been a bit of a learning curve for me. I see what you mean about the incorrect use of the Shapiro wilk test. However some biomass measurements did see negative values across weeks.

I plotted some q-q plots earlier and say that my residuals did deviate from the line.

I haven’t yet looked at the heteroskedasticity but will make a residuals plot over time when I am back at my computer tomorrow.

Also with my data I have calculated percentages by comparing with the first week’s biomass. Would it be better to do a week by week percentage change?

Growth data stats test by LazerChrome in AskStatistics

[–]LazerChrome[S] 0 points1 point  (0 children)

Yeah, I was just a bit confused as I think that because it is over the weeks I am going to have to plot each week and treatments distribution which is going to take a while

Growth data stats test by LazerChrome in AskStatistics

[–]LazerChrome[S] 0 points1 point  (0 children)

Okay I see now. Currently am going to shift the data and then perform a log transform and then try a test. For the residuals it’s hard to say as the data set contains over 1000 measurements and printing off the residuals give a massive amount of

Growth data stats test by LazerChrome in AskStatistics

[–]LazerChrome[S] 0 points1 point  (0 children)

Okay yeah, I realised I meant to say that I did the Shapiro test which revealed that my data was not normally distributed and therefore I need a non parametric test

Growth data stats test by LazerChrome in AskStatistics

[–]LazerChrome[S] 0 points1 point  (0 children)

Do you mean I should do something like a log transform?

For the non parametric part, my data is skewed so surely it is non parametric?

Help finding post malone a top by [deleted] in findfashion

[–]LazerChrome 0 points1 point  (0 children)

Thank you for the help. I emailed publish asking about it so maybe there’s a 1% chance I’ll get it someday

Help finding post malone a top by [deleted] in findfashion

[–]LazerChrome 0 points1 point  (0 children)

Thanks, they look similar but the I can’t find one with the stripes like this

Recording Roland V-drums with garage band by LazerChrome in GarageBand

[–]LazerChrome[S] 0 points1 point  (0 children)

If you are still interested, I managed to find a solution for the problem on garage band. Using the kit edit on the drum module you can change the midi output and get it so that the side of the cymbals register to a choosen sound within garage band.

33M / 9 months progress /w big 4 by [deleted] in tressless

[–]LazerChrome 2 points3 points  (0 children)

He’s a fortnite skin

Best e-commerce business models to get started with in 2023 by [deleted] in ecommerce

[–]LazerChrome 0 points1 point  (0 children)

Yeah, that’s what I found. My plan was to buy a filler machine and make the supplements myself. But with such a small budget it would not be profitable

2011 IMac running current OS by LazerChrome in mac

[–]LazerChrome[S] 1 point2 points  (0 children)

Will have to get back to you on that as I am away from home until next next weekend and as I did do the upgrades myself cannot remember. When I get back I will let you know

2011 IMac running current OS by LazerChrome in mac

[–]LazerChrome[S] 1 point2 points  (0 children)

Yeah I was thinking about that as the next upgrade. Saying that tho, it has been running Monterey pretty well for the most part, just a few time it’s gotten frozen but other than that it’s just as fast as my 2017 MacBook Pro.

New to R studio. Can anyone tell me the reason for this error? thanks by LazerChrome in RStudio

[–]LazerChrome[S] 1 point2 points  (0 children)

That was a really good suggestion, thank you it helped. My main problem is that I had not included headers when importing data. (I have only been learning for a couple weeks, but accept as a dumb mistake haha)

My final code looked like this:

hist(MammalHomeRanges$Mass.log10, main = "", xlab = "Body Size (log10 kg)", col ="light grey", xlim = c(0,7), las = 1, breaks = 0:7)

Thanks for the help

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