Contents
Is there a t test to check for similarity of 2 samples?
Paired samples t-test suggested that there are no differences between these two samples. Because I remember from stats courses that the absence of a difference doesn’t mean that the samples are similar, I wanted to ask if there is a statistical significance test to check for similarity of 2 samples?
Are there any differences between the two samples?
I have two samples – one is predicted values and one is actual values. Paired samples t-test suggested that there are no differences between these two samples.
How to perform a test for equivalence of two samples?
You want to perform a test for equivalence of two samples. One was to do this is to perform two one-sided tests based on a preferred Type I error rate, and an a priori equivalence threshold (i.e. the smallest difference between the two samples that you would care about). Your general null and alternate hypothesis in such a case would be:
Which is the best method to compare two groups?
Analysis of variance (ANOVA) is one such method. Other multiple comparison methods include the Tukey-Kramer test of all pairwise differences, analysis of means (ANOM) to compare group means to the overall mean or Dunnett’s test to compare each group mean to a control mean. What if the variances for my two groups are not equal?
How does a class of similarity measure work?
The class of similarity covered in this lesson takes the word-based features of a set of documents and measures the similarity among documents based on their distance from one another in Cartesian space. Specifically, this method determines differences between texts from their word counts.
How to measure the similarity of two texts?
In text analysis, the similarity of two texts can be assessed in its most basic form by representing each text as a series of word counts and calculating distance using those word counts as features.
How are similarity measures used in data mining?
Utilization of similarity measures is not limited to clustering, but in fact plenty of data mining algorithms use similarity measures to some extent.