Which Statistical Tool Should You Use?
Statistics are used to show patterns or trends (descriptive statistics). You can also use statistical tools to compare and contrast sets of data, to determine if there is a real similarity or difference between two sets of data, or to measure the distribution of the data the sample. You can use any of the tools below, depending on what you are trying to measure or determine.
Statistics videos, demos, etc, can be found on the Diigo online library
The gold mine of statistics websites is VassarStats: definitions, methods, critical tables, online calculators, etc
Statistics are used to show patterns or trends (descriptive statistics). You can also use statistical tools to compare and contrast sets of data, to determine if there is a real similarity or difference between two sets of data, or to measure the distribution of the data the sample. You can use any of the tools below, depending on what you are trying to measure or determine.
Statistics videos, demos, etc, can be found on the Diigo online library
The gold mine of statistics websites is VassarStats: definitions, methods, critical tables, online calculators, etc
Descriptive Stats are used to describe your data, show patterns or trends: mean, median, range, mode, frequencies, standard deviation.
Correlation Tests are used to evaluate potential the correlation or independence between two sets of data. You must first formulate the Null Hypothesis, and use one of the following tests:
Dispersion Tests are used to calculate the degree of clustering or dispersion of phenomena or individuals:

Similarity Tests are used to determine if you can generalize that two entire populations are truly different based on two samples:
