In Statistical Formulas,N Stands for

question 11

Multiple Choice

In statistical formulas,N stands for

• A)the number of different values for a variable.
• B)the number of scores.
• C)the normal curve.
• D)the normalized Z score.

---

Definitions:

Aluminum Concentrations

The measured levels of aluminum in a given sample or environment.

Test Statistic

A statistic used to estimate the parameter of interest in a statistical hypothesis test.

Kruskal-Wallis Test

A nonparametric statistical test used to compare three or more groups based on ranked data. It is an extension of the Mann-Whitney U test for more than two groups.

Null Hypothesis

The hypothesis in statistical analysis that proposes there is no significant difference or relationship between specified populations, any observed difference being due to sampling or experimental error.