I the Statistical Technique Used to Test the Equality of Three

question 49

Multiple Choice

i. The statistical technique used to test the equality of three or more population means is called analysis of variance (ANOVA) . ii. To employ ANOVA, the populations need not have equal standard deviations.
iii. To employ ANOVA, the populations being studied must be approximately normally distributed.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

AgCl

Silver chloride, a white crystalline solid that is photosensitive and less soluble in water.

Spectator Ions

Ions that are present in a chemical reaction but do not participate in it, remaining unchanged throughout the reaction.

Potassium Iodide

A chemical compound used in medical treatments, nutritional supplements, and as a protective measure against radioiodine exposure.

Total Ionic Equation

An equation that shows all of the ions in a solution as they realistically exist, used in the study of reactions in aqueous solutions.