Questions tagged [deviation]
98 questions
1
vote
1 answer
Gnuplot: Calculate the difference and deviation between two interpolations
I have the following data sets:
1 3
2 4
3 2
4 10
5 9
6 8
7 6
8 2
9 1
10 0.5
and
0.1 8
1.2 8
2.1 7
3.4 6
4.3 6
5.2 7
4.5 5
6.4 8
7.2 4
8.2 3
9.1 2
I have plotted both with the following command:
plot 'data1' using 1:2 lc rgb 'blue' smooth…
Vlad Chalapco
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2 answers
filter out deviating record with sql
We have this set of data that we need to get the average of a column. a select avg(x) from y does the trick. However we need a more accurate figure.
I figured that there must be a way of filtering records that has either too high or too low…
ken
- 4,886
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1
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1 answer
How do you do an ANOVA with means and standard deviation as values?
I want to check whether there is a difference between three treatment groups with the help of a One-way ANOVA.
The values I have for each treatment group are means with standard deviation. Even though I know the values from which the means are…
Joey
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- 3
1
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1 answer
C++ compute standard deviation
I'm trying to write a simple data analysis program but i'm having issues with computing the standard deviation of a ten elements array
We should use the square approximation (stddev = sqrt(meanofsquares/90-squareofmeans900)) instead of the standard…
Federico Ridolfi
- 41
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1
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1 answer
awk Standard Deviation
I'm trying to work out the standard deviation for a set of students marks in different subjects. I'm just a bit stuck on the last calculation I need to do and I'm just not sure what the issue is.
BEGIN {
i=0
printf("\nResults for form…
Rhys Howells
- 33
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1
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3 answers
Mean and standard deviation of triplicated vector data
I have an experiment where I measured a bit less than 200 variables in triplicate. In other words, I have three vectors of ~ 200 values.
I want a quick way to determine if I should use mean or median for my calculations. I can do the mean easily…
Turtle23
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1
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1 answer
Standard deviation of each row between two columns in R
I have a simple query. I am trying to get the standard deviation of each row between two columns in an array (n=2 for the length of the array; I know it's a small sample size)
It forms part of a longer code but simply:
data$i <- sd(data$x,…
squishy
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- 6
- 19
1
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1 answer
Map Function practice in Scheme
I am having trouble using a map function to return a list of the square of the deviation of a given set of numbers. I wrote my square-of-deviation function as follows, but I don't know how to map this. Is there a way to right my square-of-deviation…
John Friedrich
- 343
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1
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3 answers
Mean and Standard Deviation wrong c#
I've been doing an app since few days ago but it's wrong and I do not know why.
I've done the same operation in various ways. I've searched here on the blog, but I still get the incorrect result.
I hope you can help me:
I'm calculating the ** Mean…
Jean
- 593
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1
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1 answer
Gaussian distribution of normals' angular deviation
Recently I read NVidia's Mipmapping-Normal-Maps
In the "Estimating Normal Variation" section, it assumes a Gaussian distribution of the angular deviation and give a figure (sorry but I cannot post an image as a new user, please refer to Figure_2 in…
sHeldON
- 11
- 2
1
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1 answer
How does this deviation come out after I use Evaluate and Plot in Mathematica？
I ran into this problem when I try to solve a partial differential equation. Here is my code:
dd = NDSolve[{D[tes[t, x], t] ==D[tes[t, x], x, x] + Exp[-1/(tes[t, x])],
tes[t, 0] == 1, tes[t, -1] == 1, tes[0, x] == 1}, {tes[t, x]}, {t, 0, 5}, {x,…
xzczd
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1 answer
Deviations from type average
I have a df like this:
structure(list(Date = structure(c(18605, 18604, 18598, 18597,
18590, 18584, 18583, 18578, 18570, 18569, 18563, 18562, 18557,
18549, 18548, 18542, 18541, 18536, 18534, 18529, 18521, 18520,
18515, 18508, 18500, 18499, 18493,…
alec22
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0
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1 answer
Find the variance based on a threshold in R
This datasets contains 42 IDs with 1440 observations per ID. This means that the dataset got 60480 observations in total. The values of the columns AI_1..., to AI_7 got values that range from 0.00 to approx 3.. (depending on ID). I try to make…
Data miner123
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0
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1 answer
How do I aggregate using standard deviation using raster::aggregate?
For my model I need to aggregate my raster datasets using standard deviation. Is there a 'fun' abbreviation for this purpose? I am currently using mean but wish to use standard deviation instead. This is my code
library(raster)
merge1 <-…
Jessica
- 1
0
votes
1 answer
Standard Deviation of certain cells in excel
for eg I have 5 numbers in excel, in A1,A2 etc numbers could be 95 99 98 96 97, (not sorted). How do I get the standard deviation for the top 4 numbers only (ie: dropping the lowest number)
Thanks in advance.
