The numbers 1 through 4 are used to identify four different elements on the periodic table.Which element is expected to have 2+ charge when it forms an ion? 
Definitions:
Groups
Sets of subjects or items that are studied in research, often distinguished by certain characteristics or conditions.
F-ratio
A statistic used to compare the variances among group means in an analysis of variance (ANOVA) test.
SAMPLE Size
The number of observations or data points collected or selected from a population for the purpose of statistical analysis.
Groups
Collections or sets of subjects or items being studied in which characteristics or outcomes are observed and analyzed.
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