Examlex
Vitamin C contains the elements C,H,and O.It is known to contain 40.9% C and 4.58% H by mass.The molar mass of vitamin C has been found to be about 180 g/mol.The molecular formula for vitamin C is:
Null Hypothesis
A hypothesis that states there is no significant difference or relationship between specified populations, any observed difference being due to sampling or experimental error.
Groups
In research, these refer to sets of subjects or items that have been separated based on characteristics or treatment conditions for analysis.
Chi-square Statistic
A statistical measure used in the chi-square test to evaluate the difference between observed and expected frequencies in one or more categories.
Expected Frequencies
The anticipated count of occurrences in each category of a variable, based on probability distributions or theoretical expectations.
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