Good morning, guys. I wanted to ask some of the maths, stats, or anyone with the knowledge/experience smarties here about a concept I am trying to get down. I need to compare concentration-time profiles to each other (very low n=4) Each dataset has about 7 points and is dependent on time. I need to figure out if one set or a point in that set is an outlier. I so far tried box-plot, Q-test in GraphPad, and just vizual plotting. I found some papers indicating use of correspondence analysis, chi-square (did not work for me), and Andrews method. Based on Q-test of the slopes of the curves (log-transformed) there is no outlier, but I would like to get another opinion. In my possession I have graphPad, R-Studio, Sigma-Plot, and Excel of course. The easiest thing to do would be to include the fourth profile in my PK analysis, but TBH I want to practice in finding ways to evaluate whole profile outliers. Any takers? I will be very much grateful for any links, pdfs, and general advice. Oh, and my "stats for scientists and engineers" textbook doesn't even have a mention of this, so I am very disappointed lol
TIA
0
Enjoy being online again!
Welcome to the community of good people who base their values on evidence and appreciate civil discourse - the social network you will enjoy.Create your free account
3 comments
Feel free to reply to any comment by clicking the "Reply" button.Hello! Were you able to solve this issue? Finding an outlier among four data sets wouldn't be easy unless you could visually see the outlier. Four data points don't give you a good idea of the variance of your system. If you already know the variance, you might be able to find the outlier
Spongebob
Level 7
May 25, 2019
0
I never did study much statistics so I will hand this over to those with that gift. It sounds interesting though!
ripcurldane
Level 7
Feb 16, 2018
1
Thanks for trying though!
Hi guys, I just joined this group, I'm not a scientist by any stretch of the imagination. I am self educated and
paul1967
Level 8
Feb 15, 2018
0
and?.....don't leave me hanging.
Recent Visitors 31
Spongebob
Optional Custom City,
Santaclause
El Paso,
ScienceBiker
Salinas,
43teach
Orem, Utah,
dalefvictor
Astoria,
Photos 136 More
Posted by racocn8I saw some articles on meteorite composition and ended up with this picture.
Posted by racocn8Here are some photos of eggs deposited on the underside of leaves.
Posted by racocn8Here are some photos of eggs deposited on the underside of leaves.
Posted by racocn8Here are some photos of eggs deposited on the underside of leaves.
Posted by racocn8Here are some photos of eggs deposited on the underside of leaves.
Posted by racocn8Here are some photos of eggs deposited on the underside of leaves.
Posted by Slava3That makes me nervous
Posted by Slava3So we are part of a Cosmic ecosystem?
Posted by SergeTafCamNot too long ago I had the opportunity to take a couple of pictures of a peacock's feather.
Posted by SergeTafCamNot too long ago I had the opportunity to take a couple of pictures of a peacock's feather.
Posted by SergeTafCamWhat's your favorite color?
Posted by SergeTafCamWhat's your favorite color?
Posted by SergeTafCamWhat's your favorite color?
Posted by SergeTafCamWhat's your favorite color?
Posted by SergeTafCamWhat's your favorite color?
Posted by SergeTafCamExciting times.