An error (from the Latin error, meaning "wandering") is an action which is inaccurate or incorrect. In some usages, an error is synonymous with a mistake.
In statistics, "error" refers to the difference between the value which has been computed and the correct value. An error could result in failure or in a deviation from the intended performance or behavior.
Also the code is in python flask.
Here is the code updated https://github.com/NML240/flaskblog2 Here are 2 relevant files https://github.com/NML240/flaskblog2/blob/main/app/config.py and https://github.com/NML240/flaskblog2/blob/main/app/tests/conftest.py.
In conftest.py I created config...
What I've done so far is find the spring force through
##F_s = -kx##
##F_s = -111*16.7##
## = -1853.7N##
My conclusion was that since this is the spring force, the tension force must be just the negative of that so ##1853.7N## because the net force has to balance out, but I am horribly...
Hi everyone
The following problem looks like it needs to be solved by trial and error. Is there a quicker way to do it?
I had the answers (but not solutions), so I simply worked backwards to get 11^2-8^2=57.
If I had to solve it, I would have made a list of the final digits you'd get if you...
Hi! so its me again. After previous problem already solved now i ran into another problem. now about BURN card. its said need model? what kind of model? I tried using .84c for all my material but doesn't seems to work!
heres my code if anyone wants to try :-(
c TWR-P...
If a Hookean spring-mass system is made from one mass and a spring, to produce a system with a particular oscillation frequency, it's not a problem to use the propagation of errors concept to find how this frequency responds to small errors in the mass and spring constant. If a chain of...
NOTE: I am attempting to convey the equations in this post into LaTerX format in Post #19.
My result is way off. It is about 7.44 x 10^9 years. The values I use are:
1/H_0 = 14.4 X 10^9 years,
M = Ω_m = 0.3103, and
L = Ω_Λ = 1 - Ω_m = 0.6897.
The equation I start with is the following.
dt =...
Hi all,
I'm having a bit hard time performing error calculations on one of the lab results I got.
The lab dealt with finding collection rate of a certain material onto a wire. While inside a vial, the wire was soaked in the material for a specific period of time. Then the wire was taken out of...
Hi, PF
Taylor's formula provides a formula for the error in a Taylor approximation ##f(x)\approx{P_{n}(x)}## similar to that provided for linear approximation.
Observe that the case ##n=0## of Taylor's formula, namely,
##f(x)=P_{0}(x)+E_{0}(x)=f(a)+\dfrac{f'(s)}{1!}(x-a)##,
is just the...
Here is the error when I run python -m pytest
ERROR collecting test session _______________________________________________________________________________
..\..\..\..\anaconda3\envs\flaskblog2\lib\importlib\__init__.py:126: in import_module
return _bootstrap._gcd_import(name[level:]...
Source of my knowledge-:
Encoding-:
Decoding-:
Other references-:
Question-: There is no entry for index 7 in the dictionary while decoding, how do I fix this issue?
MCNP6 gives me a "10 particles got lost" error when I try to run the attached input file modeling a 3x3 fuel lattice surrounded in coolant. As I understand it, this error is usually related to the geometry/surface definitions of each component, but I'm unsure of what the source of the error is...
1. One of the few negative effects of quitting smoking is weight gain. The data below shows the weight gain (in pounds) of 18 respondents 12 months after they quit. If the mean gain follows a normal distribution with a standard deviation of 9 pounds, estimate the mean weight gain of the 18...
Attempt at question No. 1:
ΔD = ∂D/∂h * Δh + ∂D/∂v * Δv
∂D/∂h = 3Eh^2/(12(1-v^2))
∂D/∂v = 2Eh^3/(12(1-v^2)^2)
Δh = +- 0,002
Δv = 0,02
h = 0,1
v = 0,3
ΔD = 3Eh^2/(12(1-v^2)) * Δh + 2Eh^3/(12(1-v^2)^2) * Δv
Because the problem asked for maximum percentage error then I decided to use the...
Hi, PF, want to know how can I go from a certain error formula for linearization I understand, to another I do not
Error formula for linearization I understand:
If ##f''(t)## exists for all ##t## in an interval containing ##a## and ##x##, then there exists some point ##s## between ##a## and...
Hello, I have a problem using MinGW. When I write "make" during the installation, this error appears :
$make
cd ./src;make
make[1]: Entering directory '/home/benji/auto/07p/src'
gfortran -fopenmp -O -c maps.f90 -o ../lib/maps.o
maps.f90:97:41:
97 |...
Hello
We have designed an optical sensor to measure glucose.
But we do not have the same changes for different concentrations. What do we need to do to be able to observe different Lifetime concentrations?
In our sensor test, we used phosphorescence and glucose oxidase technology. The sensor...
Hello! If I have N points (x,y) which I know they are described by a Gaussian i.e. y(x) is a Gaussian of unknown mean and standard deviation, and each y has an associated error of ##\sqrt{y}##, is there a general formula for the uncertainty on the mean of this function? Thank you!
Let's give some context. I created a Mesh via snappyHexMesh and next I am setting the boundary conditions (BCs).
First I copied the patches folder "createPatchDict" to my system's folder via the command "cp $FOAM_ETC/caseDicts/mesh/manipulation/patches/createPatchDict ./system"
Taking into...
Hi everyone,
I have to classify a DNA sequence with a LSTM neural network but I have a problem with the inputs shame. Both the sequence and the class are encoded with One Hot Encoding and my code is this:
import pandas as pd
import numpy as np
data = pd.read_csv('splice.data', header = None)...
Proof: Let x be the number of dollars and y be the number of cents in the check.
Then we have 100y+x-68=2(100x+y).
From the hint, we get the following Diophantine equation: -199x+98y=68.
Applying the Euclidean Algorithm produces...
On September 8, 2019, the 200m long vehicle carrier ship Golden Ray (carrying 4067 Kia, Chevrolet, GMC, GM, Mercedes-Benz, and Ram vehicles) capsized in St. Simons Sound, Georgia, USA The accident caused the loss of a $62 million ship, $142 million in lost cargo, and $250 million in salvage...
Hi everyone,
I have used MCNP6.2 for few years. This is the first time that I encountered the error such as below:
bad trouble in subroutine mars_xs_init of imcn
l_list too small.
I tried to run an input deck and track a bunch of decay isotopes. Is anyone has similar...
Hi, PF
Sometimes it is not easy to find roots of functions. Newton gave a nice clue: the Newton's Method formula: ##x_{n+1}=x_n-\dfrac{f(x_n}{f'(x_n)}##. My concern is, now that I have understood and practiced it, comprehend what I've sketched in the summary. This is all taken from "Calculus...
Could I please ask for help with the following question:
The last part follows easily from the first part.
Answer from back of book for first part is:
2/(3u') <= tan(Ɵ) <= 2u
What I have done is the following:
Here's my diagram (I have separated the components to show the internal forces...
I am looking at the webpage for the status, and it seems to me that there is a big error in the graphics:
https://webb.nasa.gov/content/webbLaunch/whereIsWebb.html?units=metric
It shows the Earth such that it appears that the axis of rotation is going from the bottom-right to the lop-left...
Variance and standard deviation and other measures of error I understand. This formula doesn't behave well for data sets centered around zero and also has other problems, like scaling differently as N increases than the standard deviation or standard error. Does anyone recognize this and can...
Hey! 😊
One box contains ten production parts, four of which have a production error.
Three parts are removed from the box one after the other without putting them back. We consider the following events :
A : the first production part that is removed is OK
B : the second production part that...
Problem Statement:
I am not quite sure how to approach this problem and would appreciate the help. I how the C/N is closely related to the SNR (Eb/N0), but the question does not give the bandwidth or data rate for me to use the formula above. From the constellation diagram, my guess is this is...
hi guys
i came across this simple question about evaluating the absolute error, the solution is very simple as following :
$$
m_{man} = M_{b+m}\pm\Delta\;M_{b+m}-M_{b}\pm\Delta\;M_{b}
$$
so the mass of the man alone is
$$
m_{man} = (M_{b+m}-M_{b})\pm(\Delta\;M_{b+m}+\Delta\;M_{b})
$$
which would...
[Mentor Note -- thread moved to the schoolwork forums from the technical forums]
Summary:: I would like to understand how to calculate the error of a measurement provided by a measuring chain
Hello to everyone, I'm going to explain the problem I would like to understand better. Thank you for...
Howdy, my fellow nuclear colleagues!
I am new to MCNP5 and currently I am trying to simulate something simple like a sphere of UO2 to calculate its critical size.
Whenever I run my file via MCNP5 or Vised, I get an error message like
bad trouble in subroutine pass1 of imcn...
Hello everyone. I am working with mathematica, where I have developed a two-dimensional shannon interplation, just as can be seen in the slides 15 to 18 of this presentation. The code is as follows:
savedX = Table[XposX = mat[[All, 1]]; YposX = mat[[All, 2]];
windXVal = mat[[All, i]]...
By default, I had Java 7 installed on my system(X64, Fedora 20).
I needed Java 6 for a software, hence had to remove 7
sudo yum remove *java*
And then, I installed Java 6.
This installs Java 6 successfully. but the java compiler, JavaC is missing. For that, I try -
su -c "yum install...
The error on photometric galaxy clustering under the form of covariance which is actually a standard deviation expression for a fixed multipole ##\ell## :
##
\sigma_{C, i j}^{A B}(\ell)=\Delta C_{i j}^{A B}(\ell)=\sqrt{\frac{2}{(2 \ell+1) f_{\mathrm{sky}} \Delta \ell}}\left[C_{i j}^{A...
David C. Bailey. "Not Normal: the uncertainties of scientific measurements." Royal Society Open 4(1) Science 160600 (2017).
How bad are the tails? According to Bailey in an interview, "The chance of large differences does not fall off exponentially as you'd expect in a normal bell curve," and...
I installed snort and I want to connect the database with BASE but an error occurs, I don't know where I went wrong, everything is running smoothly but not with BASE connection with the database
I suspect if I'm wrong when running the command:
# sudo mysql_secure_installation
what should i do...
This is for the lab report I have to submit. ##n## is the refractive index. ##L## is the length of a gas chamber and ##m## is the number of fringes passed as the pressure in the gas chamber changes by ##\Delta p##. We are already given the error in ##L##. I performed the experiment and obtained...
Hello everyone,
trying a run I've got the following error message, and thus no output file since the run stopped by itsefl.
Please, has anyone encountered this error and would happen to know how to correct the input file ? (any hint help)
Thanks to all of you
Error Vector Magnitude is widely used in the telecommunication industry to assess the performance of the users. In the given formula, Sr(n) is the received symbol and St(n) is the ideal symbol. N is the total number of symbols received. I have a Multi-User MIMO system simulation where there are...
Hi all! Forgive the sloppiness of this post, I'm on the road.
Suppose you have a servo loop to stabilize parameter X. The issue is, when you measure X, you introduce some measurement error (let's say its white noise for the sake of argument). The noise causes a potential problem: since the...
In general, if R is the recovery channel of an error channel ε, with state ρ, then
and according to these lecture slides, we get the final result highlighted in red for a bit flip error channel. I am simply asking how one reaches this final result. Thank you (a full-ish derivation can be found...
1. μ* is easily calculated to be 100.88, textbook confirms its 100.9.
Its just the mean of all those values.
2. To estimate mean error I first calculate s^2, which is:
$$s^2 = 1/7 * ((115 - 100.9)^2 + (82 - 100.9)^2 ... + (92-100.9)^2) = 1200.88$$
$$s = \sqrt s = 34.65$$
Then I use this...
Ever since I learned about FM something's been bugging me, which is that the PLL error correction acts on the encoded data, seeming to leave open the possibility of the shape of the data itself interfering with the PLL's interpretation of what the carrier frequency is. It seems dangerous to mix...
Hello everyone. I am trying to construct a functioning version of randomfields (specifically 2D_karhunen_loeve_identification_example.py) in Matlab. For that, I have to calculate the Karhunen-Loève expansion of 2D data, since this is what it says in the documentation. I also have some sample...
I am not sure where I should be posting this; I am perfectly aware this is Taylor expansion calculus, but considering the fact that I am working with numerical ODE solutions, I posted this here.
In the paper: Implementation of an Adaptive BDF2 Formula and Comparison with the MATLAB Ode15s...
When bubbles are not removed from a buret before a titration, the measured volume of titrant used is more than the actual volume used. Then the analyte concentration will be greater than the actual concentration, and the mass of the analyte will be greater as well.
Instead, it will actually...