Questions tagged [analysis-of-means]

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The effect of scaling up distributions on the tests of means difference [closed]

What is the effect of scaling up distributions on the test of means difference among them? For instance, does doubling the baseline distribution values across 4 distributions change the results of ...
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Comparing means in bins of different sample sizes

Suppose I have the following 2 plots showing the mean of a variable on a 2-d spatial grid, as well as the occurrence histogram (see bottom). Is there a specific way to compare these means, even ...
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How to compare means among groups with a single value?

My aim is to compare means among different groups, but I only have one single value (mean) for each group. I also have the total number of individuals per group. I don't have data for all individuals ...
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855 views

T-test, ANOVA or Regression, what's the difference?

I know this question has been asked in similar ways already, but cannot find a suitable answer to understand it. I have three subsamples defined on programme participation (participants, drop-out, and ...
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Differences in means of raster files

I am analysing long-term data on a raster. I group this data in three parts depending on a factor value. Now, I am taking means in each group pixel by pixel and would like to detect pixels on the map ...
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Can Failure Mode Effect Analysis (FMEA) method be used to find a cause of a failure?

In the research i am currently making, there is a problem in a company supply chain in it's supply chain (source) adaptability. I assumed that the main failure is "error in the company's system to ...
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1answer
118 views

Which test does the lsmeans package use to compare the means in pairwise tests and what are its assumptions?

I'm currently using lsmeans to compare the means of various groups using the contrast argument. I'm using data that follows a Gaussian distribution. Would an unbalanced data structure affect the rate ...
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2answers
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Calculating if there's a significant difference between the difference of two sets of groups

I measured the speeds snails fell off in a high-speed aquarium, where current was created by me opening a valve to different degrees, leading to the speeds that snails could fall-off at being set and ...
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1answer
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Proper statistical analysis to compare means from three groups with two treatment each

any help to solve this is greatly appreciated: The research question is to assess the superiority of Treatment A for estimulate bone growth in comparison with Treatment B, the current standard. I'...
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1answer
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Comparing two means from one person at one time date

A short shot of help would be great!! Thanks a lot in advance. I have asked same probands to rate two groups of people, e.g. unemployed indivduals versus employed individuals with parallel formulated ...
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2answers
29 views

Compare multiple means and finding which one is the biggest and which one is the smallest

Is there a statistical test I can apply to compare multiple rates and get which one is the biggest and which one is the smallest? Example: 1 person converted out of 2 for page A. conversion 1/2 10 ...
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1answer
163 views

Equicorrelation of deviations from a grand mean

In the following article: Nelson, L. S. "EXACT CRITICAL-VALUES FOR USE WITH THE ANALYSIS OF MEANS." Journal of Quality Technology 15.1 (1983): 40-44. Nelson states that "When ANOM [Analysis of Means]...