The ranks tag has no wiki summary.
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34 views
How are ranks calculated in tie cases?
I am considering the following question: when there are ties, how are ranks calculated?
In some references, they first rank them without repeating the ranks, and then average the ranks of those ties ...
1
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1answer
67 views
Equivalent to K-S test on discrete data with uneven quantization
I have some data resulting from a simulation that consists of several groups, each containing a single real datapoint and a variable number of matched controls. I take the rank of each real value ...
2
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1answer
56 views
T-test on ranks vs Mann WHitney U-test equivalence
What does it mean when people say that a T-test performed on ranked data is equivalent to a Mann WHitney U -test? Does that mean they just test the same hypothesis/are useful in the same situations or ...
2
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1answer
166 views
ANOVA on ranks vs. Mann-Whitney U test
What exactly is the difference between performing a t-test on data that has been ranked and performing a Mann-Whitney U test on the unranked data? I keep reading things like:
For example, the ...
0
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1answer
57 views
Which statistical tests can be used to compare two paired/related rankings?
To understand my question, can anyone to evaluate if the statistical analysis in the below research (from the 2011 year) was performed correctly? I must to analyze a similar research and I am ...
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0answers
43 views
Spearman's Coefficient with excluded ranks
I've got a dataset where I apply one of two transformations to get two scores, Score A and Score B. I then rank Scores A and B and for simplicity's take decide to keep only records where rank(score A) ...
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0answers
76 views
Comparison of ranked lists
Suppose that two groups, comprising $n_1$ and $n_2$ each rank a set of 25 items from most to least important. What are the best ways to compare these rankings?
Clearly, it is possible to do 25 ...
0
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1answer
75 views
Rank data from 1 to N (N may not be equal to number of elements in the dataset)
I calculate percentile ranks based on the method at http://www.psychstat.missouristate.edu/introbook/sbk14m.htm
I need to assign ranks to a dataset where ranks are ...
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0answers
33 views
Explicitly optimizing rank in R
I am try to build a predictive model where the target variable is continuous. However, my error metric is average precision. The goal is to correctly rank the test set, by the target variable, from ...
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0answers
77 views
Assumptions of Quade Rank-Based ANCOVA
Spelled out in plain English, what are the assumptions of the Quade (1967) rank-based ANCOVA procedure? It's not written very clearly in the paper. For instance, in regular ANCOVA, I believe the ...
2
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0answers
81 views
How to compare ranked data?
I have some questions about how to analyze ranked data.
The data looks like this: 4 groups of people with HIV and 16 other groups of people living in the same village were asked to rank 12 ...
0
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1answer
120 views
Combining and ranking standard deviations
I am trying to take three independent indicators and combine them into a single composite measure.
For discussion, lets say that this is a composite measure for 'economic performance', and that the ...
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1answer
55 views
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1answer
142 views
How to rank film production companies based on weighted ranks?
IMDB uses a Bayesian estimate to compute its top 250 films. Let's say I know all the variables needed to compute this Bayesian estimate for these films. I also have the production company associated ...
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1answer
207 views
Percentile Ranks in Matlab
I have 2 vectors of raw values. I need to do a percentile rank correlation and an ordinal rank correlation between them in Matlab.
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4
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0answers
120 views
How to predict the probability of a performance rank for a test taker on a future test based on previous test scores?
Four students sit a series of tests, each test contains 10 questions. Students are ranked 1-4 in each test depending upon who got the most questions correct.
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1
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1answer
100 views
Wilcoxon signed rank statistic
It seems there are two formulas to perform a wilcoxon signed rank test - one where the sum of all the signed ranks is w and another where the minimum of the sum of the negative ranks and positive ...
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0answers
119 views
Plot precision recall using a vector of ranks
I have developed a predictor which scores a datapoint, x on how likely it is to belong to a particular class, C. The higher the score the more likely it is that the datapoint belongs to the class.
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0answers
92 views
Structural shifts
I am using the R programming language to analyze the cointegration of 5 data sets. I have determined that the series share 3 cointegrating vectors after taking structural shits into account following ...
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2answers
628 views
Regression for rank order dependent variable
I am looking for a package to analyze rank-order data in the form of regression. My outcome (dependent) variable is a rank ordering in the sense that the respondents to a questionnaire were asked a ...
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0answers
53 views
What is the best way to treat popularity for ranking?
I have items for purchase and I have statistics how much each were purchased. I want to use this amount for ranking them. The simple guess is to ...
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0answers
256 views
How to compute composite score of rank order variables?
I have several rank order items about the use of languages in different contexts. Specifically, respondents were asked to order three languages from most to least used in situations such as at work, ...
1
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1answer
703 views
Rank transformed 2-way ANOVA
I know I'm asking a lot of questions these days! Sorry about that, but I'm trying to work through my grad thesis data collected over the last 4 years, and am repeatedly tripping on my beginner's grasp ...
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2answers
1k views
Why is the Mann–Whitney U test significant when the medians are equal?
I've received a results from a Mann-Whitney rank test that I don't understand.
The median of the 2 populations is identical (6.9). The uppper and lower quantiles of each population are:
6.64 & ...
3
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2answers
1k views
What correlation coefficient and graph is appropriate with this data?
I'm not in Statistics field. I conducted the case study and collected the data as shown below
I have data as shown in the table below:
I would like to find correlation coefficient from this two ...
4
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1answer
617 views
Compare rank orders of population members across different variables
I have some data which describe residential units for people with learning disability, variables like how nice the furnishings are, the level of psychiatric symptomology on the unit, how happy the ...
