Questions tagged [analysis-of-means]

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Distribution of the grand mean (mean of means), and case of stratified sampling

I am having some trouble while estimating the distribution of the mean of means, according to the type of sampling. Basically, I sampled N=1000 sets of n=100 random numbers distributed as an uniform ...
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1answer
88 views

How to tell if difference in f-score is significant?

I have $N$ data points, each of which has an associated label that is either $0$ or $1$. For which data point I know the true label. Say I put all true labels in a vector $t$. Next I ask Alice to ...
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1answer
275 views

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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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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1answer
183 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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44 views

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
64 views

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
42 views

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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31 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
242 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]...