How to compare means of multiple groups (say 40 groups) which have different sample sizes and standard deviations?

I have around 40 groups. They have different sample sizes. For example in first group 10 people responded, in second group 25 people responded, in third group 5 people responded and so on. The...

11 December 2017 1,946 4 View

How to conduct Non-Parametric Mean Difference Test?

I have a survey data. The format is as follows: Region 1: Res Credit Investments A 1 0 B 5 5 C...

10 November 2017 1,110 3 View

When to apply Modified Mann-Kendall Test?

I have data on crop yield for 600 districts of India. I wish to conduct trend analysis of this yield for each district for say last 20 years. To conduct trend analysis, Man-Kendall test is well...

09 October 2017 2,408 19 View

Are Normality and Non Linearity Tests in Principal Component Analysis Important for Interval Scale Data?

I have an interval scale survey data. I have defined the socioeconomic status of the survey site with 5 parameters and wish to create a composite index. I do not have any prior weights for these...

06 July 2017 9,797 4 View

Issue with Statistical Model Building

I want to asses impact of fertilizer, seeds and irrigation on crop productivity. Total observation number is 100 and its a panel model. The issue is that while dependent variable requires log...

06 July 2017 7,820 4 View

From where can I get horticulture statistics (fruits and vegetables) for India district wise from 1997 onwards?

I am looking for district wise horticulture statistics, that is, area and production, for India, district wise, from 1997 onwards. However, I am not able to find any compiled dataset. Mainly its a...

04 May 2017 6,479 10 View

How to account for relation between independent and dependent variables in a small response set for 40 technologies?

Hello Experts! I have a set of 40 technologies and their corresponding adoption level. Also I have information various adoption barriers like market connectivity, finance and machinery. It is a...

02 March 2017 7,988 2 View

Minimum Sample Size (or Observations) for a Rank-Ordered Logit Model ? Are 30 observations sufficient?

02 March 2017 5,649 0 View

How to compute index with ordinal data?

02 March 2017 6,034 5 View

Generalized formula for Mazziotta Pareto Index ?

I recently came across this paper "http://host.uniroma3.it/progetti/capabitaly/db/docs/Mazziotta-Pareto_14_aprile_2014.pdf " , which is based on Mazziotta Pareto Index. My query is regarding the...

02 March 2017 8,557 10 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

How to normalise data on OPM package from R Studio ?

Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...

02 March 2021 3,584 1 View

VIF very high, but correlation is low and coefficient is significant. Which one whould I choose?

Hello. I have a question whether if my coefficients (statistically significant) would be valid when VIFs are really high. In my model, there are independent variables(IV), moderating variables...

26 February 2021 956 13 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View

Data Analysis K-S and S-W tests?

Hello, I have conducted analysis where the K-W and S-W have come out as p

25 February 2021 9,648 3 View

Statistics: include groups of respondents made by one person for analysis?

Good morning, I could not find literature about this so I am asking. I am organizing data for a questionnaire (N=100) that foresees some personal questions like level of education. For the aim...

25 February 2021 2,090 4 View

Bayesian decision trees and bayesian regression trees in Python and/or R?

I am looking for implementation of bayesian decision trees and bayesian regression trees in Python and/or R.. Do you know if the existing libraries support this

23 February 2021 6,689 3 View

Are there packages (R or Python) for simple models (bucket?) to assess soil water content?

Hi everyone. I am researching droguht effects on soil water drought. I am looking for already implemented functions in R or Python to estimate soil water content from precipitation,...

21 February 2021 2,084 1 View

Which is the best software or programming language (user friendly) for analysing data?

I have a basic knowledge on Python, R and MATLAB in analysing data. Among those, which is the best and user friendly? Which one should I learn deeply to analyse data?N:B: I want to learn data...

20 February 2021 3,950 15 View