Data Definition and 998 Threads

I was given the averages (AVG) and the corresponding standard deviation (SD) of sets of data. I have no copy of the raw data for each data point that were used to calculate the AVG and SD. I performed further data treatment on the data. I want to ask what is the relationship between the...

Homework Statement Hi guy I am having a real issue trying to find the fundamental charge from my data. So here is the background. Basically I carried out and experiment where we measured an oil droplet the was floating a specific voltage by taking the measurement of 12 oil droplets and...

Homework Statement Transfer data from stand-alone application written in C/++/# to web application written in C#.NET. Transfer data from web application written in C#.NET to stand-alone application written in C/++/#. Homework Equations The stand-alone application runs on my PC and the web...

Homework Statement Develop a hydrograph (rainfall intensity vs time) for the precipitation data . Then , estimate the amount of gauge X if there adjacent station precipitation amount of A , B and C are 42.4 , 35.3 and 38.4 respetively . Homework EquationsThe Attempt at a Solution So , i...

It's a really interesting idea. I think I want to eventually add this to my toolbox. But how? I've heard it uses ideas from algebraic topology. But how much of theoretical topology do I actually need to learn? Are proofs important? I don't care about developing the algorithms from scratch. I...

Hello Forum, Given position and related time data, what is the most correct way to calculate the instantaneous speed? For example, given the data (x1, t1) , (x2, t2), (x3, t3) , (x4, t4), (x5, t5), is the instantaneous speed at time t3 given more correctly by v(t_3) = \frac{(x_4-x_2)}...

Can someone point me to an understanding of why VFD rated cable include Inductance and Capacitance? For example, Belden cable 29504 shows impedance, inductance, capacitance between conductors, capacitance between conductor and sheild, and DC resistance. Is there a VFD motor calculation that is...

I’m looking into enrolling in a part-time online data science-related masters program, and am looking for suggestions/feedback on which ones to consider.Some might consider those a waste of time and money and I can just self study, but given that, I would like to still pursue this to get a...

Hello everyone, I just had a question for you all. I am trying to use a laser to scan a particular surface. What software or data retrieval tool would I need in order to view the surface in question after scanning it with a laser? Also, what wavelength and wattage would you suggest for getting...

Would the following method work? I could uniformly distribute points into the data cloud. Of the "darts" that I threw in, create edges between all points with a metric value under a certain amount. The nodes in the resulting graph that have more neighbors would indicate greater density. I could...

Hello, I have just bought the static charge meter, Keyence SK-1000. Analog output is sent through two small cables denoted as: 1. Analog output (surface potential). 2. Analog output GND. The analog output can be set to one of the following values: NONE (OFF), -5 to +5V, 0V to 5V, 1V to 5V, 4mA...

Homework Statement I am asked to find the 60th percentile of this question , so i found that 30 x 0.6 = 18 , So , the 60th percentile is the 18th term ? Or 19th term ? I am confused . I know whether it's 18th or 19th , it's still the same . I just want to get my concept correct Homework...

The problem is the following : I have some measured data's obtained when measuring a physical process. Let's call these : yE,L where E and L are 2 physical parameters of the experiment (an energy and a length). I also know that : $$\frac{y_{E,L}}{\sum_{k=1} ^{k=100} {\epsilon_{E,L} (k * v) *...

Homework Statement (see my attached photo to better understand where I am coming from!) So after some research, I've discovered that the current at different points in a simple series circuit is supposed to be the same value, and that the voltage is supposed to be different values. I...

Hi guys! (see my attached photo to better understand where I am coming from!) So after some research, I've discovered that the current at different points in a simple series circuit is supposed to be the same value, and that the voltage is supposed to be different values. I performed a lab on...

I have a tool that assesses data in latitude/longitude/"data" format as to whether the data is clustered or if there is a pattern and to what scale. I would like to assess some of the COBE/WMAP/PLANCK data regarding the very early universe. I got this idea after being in lecture and an image...

Hello, I currently have a Google Sheets document that I want to run some analysis on. The document is very formula- heavy (not just raw data). It takes a set of input numbers and does some computations and gives me an important output number at the bottom of the spreadsheet. These computations...

Hi everyone, I have a MySQL DB with a couple of large tables (a couple hundred million rows). Each row has a timestamp associated with it. Since this is just historical data, and not needed we want to copy older data into another database, and then delete the copied records. I've written a...

Hi All, I am looking at the page http://www.visiondummy.com/2014/04/geometric-interpretation-covariance-matrix/ In which White Noise in 2D is defined as the/a graph of uncorrelated data, so that the associated co. It is sassociated covariance matrix is the identity. It is stated at one point...

Hi, I'm supposed to linearize this set of data: "Below is a data set which includes information about the motion of the objects in the solar system. Note: the periods are listed in Earth years (time it takes the Earth to complete one orbit around the Sun) and the average distances are reported...

Hi everyone. I'm trying to write a program that reads data from 2 files and then calculates the mean, standard deviation and standard error of both files (separate values for each). I'm struggling to get my head around simple I/O, so excuse the poor attempt, but this is what I have so far: (I'm...

Hi all! First of all I am sorry about (grammatical ,etc) mistakes that I maybe do but english is not my first language. I am physics teacher in Greece holding a B.Sc. in Physics and a M.Sc. in Physics teaching. After 3 years of professional teaching I would like to start working in another...

Hello! I have been using python for my data analysis and processing needs as an experimental physicist for an year now. I have used MATLAB and originpro before and python provides me everything I need. But I am not satisfacted with my worflow specifically for plotting needs. I often find myself...

Hi All, I need to do a presentation in the subject areas of SQL Server, general Database into the area of Data Mining for a job interview. Any Ideas? First thought is the use of SSAS ( Analysis Service) and SSDT ( Data Tools) from SQL Server in Data Mining. But this does not seem...

I'm trying to find measurements for the weak interaction at various distances. Any suggests for search terms or relevant paper would be appreciated. Thanks, Dan

Hi all, I'm currently in the middle of performing an experiment for the final project of my MSc, and I have a question about how I should go about weighting the data when fitting a curve to it using the MATLAB fitting tool. Firstly, a bit of background about the problem. I am seeing how low...

I have some data collected from experiment and I want to calculate the max and min values for this data. Please note that these data not a result of function. What is the best mathematical way to get the max and min without just picking them by directly observation.

I've read in the popular media that there is a difference between the two. Is this true, and if so, why?

hello everyone anyone knows if this research is made? imagine you have available the data from the kepler telescope to search exoplanet, create a training set of data based on the concept of find exo planet , calculate their orbit and try to design the virtual exo solar sistem , understand the...

Really excited about this blog post by yours truly. Wineman Technology is going places!

Hello, this is my first experience in this forum. :) I was wondering if someone can help me understanding my accelerometer data installed in a project consisting in an object that is dropped in the air from an altitude of approximately 1000 meters. The descent is controlled by a parachute...

Hello All, I want to improve myself in data fitting in order to derive new equations for the data from experimental results and/or performance analysis. I am an engineering researcher and since I found some out-of-world formulations derived from performance data, I need to learn this advanced...

Hello, working on a puzzle and I think this may be what I need to do to solve it. I have a long string of characters,752 total with the range 0-9 and a-f. I believe that the data needs to be aligned based off the processor and memory. The Cpu is at 2800MHz and the memory is 1024MB. Is there a...

Hello, yesterday at work there was a discussion about genotoxicity testing, and a point caused some controversy. I wonder if you could shed some light, please. To give you some context: we work in drug discovery, and before a substance can be administered to people, we need to check that it's...

I bought a Nest thermostat a few months ago and I wanted to figure out how much energy it has statistically saved me. I have my usage data going back four years (I track the utilities to split with roommates) and I can find the historical weather data for my area for each day of the month. One...

Homework Statement Find the mass of water in this container when given a data plot of temperature (C) and Heat Added (kJ) I have NO idea where to even start with this.

Good day to all! I'm not a bot or spam either. I just want to inquire about an energy cost saving system. Electric demand charges mostly in business. That's why cutting down our usage costs is a priority. Any idea about a solution that will help us keep an eye on our utility bill, processing and...

Homework Statement I am trying to perform a weighted fit of a data set ##(x,y)## shown below. The only information I have are the two vectors ##x## and ##y## and the uncertainty present in the ##y## values (##=0.001##). Homework Equations The Attempt at a Solution Statistical weighting of...

Hello I would like to copy a huge amount of data (10-20TB) to 5-10 hdd (internal/external). I thought about using the usual "cp/rsync" utilities, but it will take a long time. After a quick search, I found this unix utility...

Fair warning: I can handle basic physics stuff, but probably nothing post-collegiate. :) Specifically, I'm looking for a primer on phased array radar that will tell me two things: 1) what are the practical physical (antenna) requirements for running a PAR system in the 800MHz/5GHz bands, and 2)...

I have taken AP Statistics, and this is for the final project. What we have learned consists of some simple significant tests (t test, z test for proportions, two sample tests, chi squared, and logarithmic transforms). My partner and I are considering creating a scatter plot of distance between...

I have a signal that I am able to calculate through an acoustic model for airfoil noise. I am told that the model solves for a narrowband frequency response, however, my measurement data is provided in third-octave band representation. How do I convert my current dataset to the third octave...

Hello, I hope this is the appropriate section to post this question: I conducted a study in which participants were to do one of three treatment options and then write a test. The intention was to separate the participants based on the option they selected and using a one-way ANOVA, analyze...

Hi everybody; I have plotted a matrix with sea surface temperature's correlation with another variable, the size is (360x180x12); using to plot : figure for i=1:12 subplot(4,3,i);imagescnan(loni,lati,squeeze(double(r4_sat(:,:,i)))'),colorbar; end Now, I want to plot over it another matrix of...

Hi all, I am currently working on an Arduino project that involves multiple stepper motors. The motors are told how to move by an external txt file. However, sometimes the processing of how the steppers have to move takes longer than the actual movements themselves. Some movements should only...

Homework Statement I have the data for a p-v diagram from experiment of a fluid (the fluid is unknown). The data is attached below as the crosses. It also has the approximated ideal cycle for that data. Does anyone know how to find the work done for this real experimental data? Maybe a MATLAB...

I have this set of data (in the attached image) and I'm trying to normalize the counts at each angle to a maximum of 100. I'm not sure how to do it though. Any tips would be much appreciated. I have the mean and std dev for each count at each angle. I don't really know what to do from here...

I'm curious if there have been any variations to the double slit that specifically looked at whether the particles behavior was determined by the computer keeping the data or if a consious person was there to see it. For example what I had in mind was having an isolated room where the computer...

Hello everyone. I'm trying to interpolate the data taken (frequency in Hz vs A in dB) from a bandpass filter with Q = 10.4. The problem is that I'm not entirely sure about the transfer function that I should use to interpolate it. I'm trying to extrapolate the peak frequency, Q factor and...

Hi. Sorry, couldn't make a more specific tittle, I'm not used to solve physics problems. A friend of mine handed me the following problem: Homework Statement You have a graph that denotes the aceleration of an object as a function of the position of the object. This object has a mass of 10 Kg...