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Questions related to Statistics
We collected three ecological variables from a study area in nearly every months for three years. We would like to perform optimized hot spot analyses in ArcGIS on these months and then check the...
26 April 2020 10,047 4 View
Hi, I have analysed my data using multivariate multiple regression (8 IVs, 3 DVs), and significant composite results have been found. Before reporting my findings, I want to discuss in my...
24 April 2020 6,701 13 View
I am working on Sentiment Analysis and have a dataset that has 48000 tweets with labels. 7000 Negative, 17000 Neutral and 24000 Positive Tweets. Is my dataset is balanced and if not how can i...
24 April 2020 8,384 3 View
Hi all, I am stuck at the following problem: I need to determine if there is a significant difference in Length of stay (LOS) in two groups: decendents and survivors, in different age groups. Can...
23 April 2020 938 4 View
I am looking for a way to compare two time series and to find a measure of similarity between them. Previous ideas were to compare the distance between both series and to count the number of...
20 April 2020 5,769 20 View
My data set is a time series for daily returns for a stock market index, spanning over 10 years Before applying a GARCH model, what are the requirements my data set should have and what are the...
18 April 2020 9,110 3 View
My Marketing Mix Modeling data contains some categorical variables which I convert into dummy variables. Before trying to create a Log-Log model I plan on replacing the 0 values with 1 and 1...
13 April 2020 8,352 7 View
Hello, I am trying to run a binary logistic regression between one dependent variable and 8 independent variables. I already know that only 5 of these independent variables are significantly...
09 April 2020 1,464 7 View
There is a complete field called Technical Analysis (1) aiming to forecast market prices based on "statistics". Some methods rely on performing linear regression on past data to predict future...
07 April 2020 1,811 4 View
Hi, I'm trying to merge two chlorophyll datasets from different sensors by applying linear regression on their data overlap. The journal that I'm following log transformed (base 10) the data from...
03 April 2020 1,015 7 View
Hi. I have conducted mediation analyses using Mlmed. My within-subjects indirect effect is negative and significant. My within-subjects index of moderated mediation is also negative and...
02 April 2020 2,454 5 View
I have two groups (10 participants in one and 12 in the other), each one viewed 1 stimulus (web page that present 4 products to choose between). One of the web pages has an orange label under one...
01 April 2020 2,897 4 View
I have only the total number of cases for each diseases (measured by millions) and I'm trying to find a significance relationship for their coexistence throughout the 5 regions...
25 March 2020 4,531 3 View
Hi everyone, I have 2 treatment groups and 1 control group. I measured some physical parameters as a pre-test and post-test. Should I compare 3 groups pre-test and post-test separately by using...
24 March 2020 8,712 8 View
Hello, I have conducted simple linear regression for four time points, always on the same sample. My time points are 10 years apart and now I wish to compare the slopes / betas / regression...
22 March 2020 10,141 9 View
Dear community, I've been trying to classify soil community obtained through the amplification of AMF specific primers (AMV4.5NF (5'-AAGCTCGTAGTTGAATTTCG-3') e AMDGR...
20 March 2020 8,697 2 View
Hi, I am doing a GWAS analysis of european bison's a dog's SNPs. Right now I am doing multiple data clean up, according to previous studies and what I have learned. I was thinking, if it is ok to...
19 March 2020 3,206 3 View
I have a data set of around 1630. Some variables are missing in 20% of the sample (the later questions - survey fatigue/drop out). (I'm considering removing 250 participants who didn't answer...
18 March 2020 7,801 5 View
I am trying to determine if an equation is suitable to model Pressure drop vs fluid velocity. I have experimentally measured pressure drops for a variety of velocities, forming a curve, and I...
07 March 2020 9,604 8 View
My question concerns a particular finding from a randomized, placebo-controlled within-group cross-over study. I have an interaction effect of relationship duration by treatment condition on...
05 March 2020 3,374 3 View
I want to Develop an Object Detection RESTful web service that will take images as payload and return the coordinates of the bounding boxes or the image itself marked with the detected...
05 March 2020 771 14 View
If I have the number of people presenting with a particular disorder in two particular years, lets say 12 in 2005 and 28 in 2006. Can I us the chi squared goodness of fit with 20 as my expected...
03 March 2020 8,400 4 View
I need to understand in the above three t-tests which test where to use?
21 February 2020 7,945 4 View
I am analyzing fruit-set data (a binary response, so 1's and 0's only) from a pollination experiment. Five treatments were applied to flowers, one of which (pollinator exclusion) yielded no...
20 February 2020 5,827 4 View