Questions tagged [quantitative]
25 questions
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Why cant I download data of multiple stocks from yahoo finance
Hi I am trying to download data of multiple stocks from yahoo finance using the quantmod package in R. My method is to create a function using the getSymbols function, and use lapply to apply this to a vector of ticker symbols. Below is my…
Yoseph
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How can I repeat a simulation a function 250 times?
I am trying to simulate a hypothetical stock return. This has been done using:
set.seed(1)
simulate_returns <- function(T) {
sim_return <- MASS::mvrnorm(n = T, mu = mu, Sigma = sigma)
sim_return <- as_tibble(sim_return)
…
oxguru
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- 2
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Analyzing data set which contains 30 observations
I own a dataset that contains marks for 3 tests. The first test has done before the experiment. Second and third has done after the experiment. I want to say since this experiment students marks have been improving, in a graphical way. I selected a…
Dinuka
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consoletvs v6 charts X axes : is it possible to have date (or timestamp) with irregular ticks?
I'm trying to create X axes that considerate date as value so that ticks will be irregular, here is my chart options :
$chart->options([
'maintainAspectRatio'=>false,
'displayAxes'=>true,
'responsive' => true,
'tooltips' =>…
nine
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- 2
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1 answer
How to build a exclude condition in C#
I'm coding a trading system using C#.Most of my logic is if some conditions occur at the same time,enter buy.
But in some scenario,I need an exclude logic:if some conditions occur at the same time not buy.
I tried to set a variable named Falling1 =…
williamfaith
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Statistics quantitative
1% of customers are interested in a vertical for snow removal. We run a survey on the
customers that tells with 99% accuracy whether the customer is interested in this vertical. All
customers answer the survey.
If the survey indicates that the…
MariaO
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Remove estimated effect of independent variable on dependent variables (interval/ratio) using linear regression
Question:
Can we use unstandardized coefficients derived from linear regression to remove the effect of an independent variable on the dependent variable?
I have a large dataset and suspect that an (unwanted) independent variable (IV) influences the…
Chame Leon
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Quantifying a 3D scatter plot
there is tricky problem I just cant solve with my basic MATLAB skills.
I have a 3D-scatter plot with colour code (that refers to the term property in the caption) that I creted from a four column array (with X,Y,Z and a property column).
With the…
Arne
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Transform variables
I'm just asking how to transform from categorical variables to quantitative variables so as to make a boxplot.
My command is:
wiser_perc<-read.csv("Perca_fluviatilis.csv",header=T, sep=";")
attach(wiser_perc)
summary(wiser_perc)
Country …
Rinot
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votes
1 answer
How to convert ordered categorical variable with 4 levels to quantatitve variable
Have an ordered categorical variable with 4 levels that weve treated as a factor with 3 additional indicating variables and have concluded only one is significant and want to reassign this single significant variable to the original variable to make…
