According to the Chebyshev Rule,at Least What Percentage of the Observations

question 2

Multiple Choice

According to the Chebyshev rule,at least what percentage of the observations in any data set are contained within 2 standard deviations around the mean?

• A)67%
• B)75%
• C)88.89%
• D)95%

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Definitions:

Buffers

Substances that minimize changes in pH by absorbing or releasing hydrogen ions, thus maintaining a stable environment in solutions, especially in biological systems.

Hydrogen Bonds

Weak bonds between partially positive hydrogen atoms and partially negative atoms (like oxygen or nitrogen) in different molecules or within the same molecule.

pH Solution

A measure of the acidity or alkalinity of a solution, on a scale of 0 to 14, where 7 is neutral, values below 7 are acidic, and values above 7 are alkaline.

Ions

Atoms or molecules with a net electric charge due to the loss or gain of one or more electrons.