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Questions related to Statistics
Suppose Intervention A and Intervention B are randomly allocated to 50 participants each (n = 100) to compare their efficacy in preventing a condition after a certain time period. Efficacy is...
23 September 2021 1,233 8 View
I want to analyze 1IV, 1DV and 4 mediator. I struggle to find references about it. Thank you so much, Ida
17 September 2021 1,486 3 View
Just getting a gauge from various sides of the community regarding which statistical analysis method is underrated. Thank you.
14 September 2021 9,795 5 View
Hello there, I got a response surface regression. In its ANOVA, the model p-value shows as 0.005 but the p-value of lack-of-fit shows as 0.038. Just curious how to determine whether the model is...
14 September 2021 5,609 3 View
Hello everyone, I am relatively new to statistics and would need some guidance. So I did a linear regression of some ratings and out of curiosity I wanted to compare the results of my model of...
12 September 2021 5,274 27 View
My friend and I have arguments about some statistical assumptions. He thinks that if he has 4 constructs, and every construct has 3 variables, for example. To test a mediation analysis, he can...
08 September 2021 441 9 View
I’m performing a binary logistic regression and my linearity of logit assumption for one of my independent variables (total scores) is not being met. My only option that doesn’t require very...
04 September 2021 4,460 16 View
I find this error after executing brm() in RStudio "Error in compileCode(f, code, language = language, verbose = verbose) : sh: C:/rtools40/usr/mingw_64/bin/g++: No such file or directorymake:...
30 August 2021 4,524 7 View
I'll explain briefly the experimental set-up. - One gruop of subject measured in two conditions: A: with treatment (Instrumented gait analysis with foot orthosis) B: without treatment (Barefoot...
24 August 2021 9,363 8 View
I am using the Friedman test and the Dunn test to compare the results of a few algorithms, yet, despite having the Friedman test showing me a significant difference (pvalue=4.579491803168107e-08),...
23 August 2021 1,282 3 View
Do you simply take the positive value? Or is the 0 point an arbitrary position and you need to add the positive value and absolute of the negative value? (Ex. The minimum detectable value is -2 nm...
10 August 2021 4,259 3 View
I have two datasets of equal size and characteristics, I'm looking for metrics to compare these data. I'm using the Python language associated with Pandas and Sklearn.
09 August 2021 546 3 View
I have a sample with 138 participants. Only 6 of them reported living alone (%4.3) while the remaining 132 share the household with others (family/partner/housemate etc.) I am trying to decide...
24 July 2021 3,839 6 View
My model has 7 covariates. Therefore, a hazard ratio for one covariate is adjusted for other covariates in the model. The mean and median values given with Kaplan Meier (KM) curves are for...
17 July 2021 6,026 5 View
I have two dataframes coming from two populations that I want to compare. Rows are the features I want to compare and columns are individuals. The values are the copy numbers (only positive...
08 July 2021 7,119 17 View
I want to generate observations 9,36 and 80 as outliers from a dataset of 100 samples. How can i write its program ( code it) in R?
08 July 2021 4,892 3 View
In my research, I've made a following equation (with a demographic dummy variable Czech = 1, Dutch = 0): DV * Czech = b0 + b1*Czech + b2*Czech ... b10*Czech. I can simply interpret the b1...b2...
03 July 2021 9,212 11 View
Dear fellow researchers, As a part of my study, I am calculating the odds ratio in Head and Neck cancer patients. At first, I calculated the odds ratio separately for each risk factor (smoking,...
02 July 2021 4,011 5 View
Hi, I recently used a validated scale to measure self efficacy on technology use of maritime instructors. The scale was originally developed for measuring self efficacy for a generic instructor....
01 July 2021 9,667 7 View
I want to analyze Metals collected on 47mm PTFE Filter.
01 July 2021 7,686 1 View
A dataset has imbalanced dataset. How do we prove this? Is there any statistical or mathematical or visual representation approaches?
28 June 2021 9,805 11 View
I have two factors ( X1 and X2) and a response (Y). I want to find the values for X1 and X2 to obtain maximum Y. I have done some tests to have a view of response in terms of X1 and X2. I fixed...
28 June 2021 9,768 3 View
I am trying to compare the performance of several aerosols measurement techniques including the optical particles counter principles and photometer. The GRIMM records concentration in counts/liter...
28 June 2021 1,206 1 View
Hello, I’m analyzing how multiple emojis change the perception of messages. In the questionnaire, the participants had to rate neutral sentences and the same neutral sentences enriched with one...
25 June 2021 1,040 5 View