The Following Two Statements Refer to the Structure of Experiments

question 53

Multiple Choice

The following two statements refer to the structure of experiments.
I.An experiment can only manipulate one aspect or level of the independent
Variable at a time.
II.An experiment can only have one independent variable.
Which,if any,of these statements is (are) true?

• A)I only
• B)II only
• C)I and II are both true
• D)Neither I nor II are true

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Definitions:

Inflation

The rate at which the general level of prices for goods and services is rising, eroding purchasing power.

Income Distribution

The way in which a nation’s total income is spread among its population.

United States

A country in North America, consisting of 50 states, a federal district, five major self-governing territories, and various possessions.

Recent Decades

A term referring to the relatively immediate past, often used to describe changes or trends over the last 20 to 30 years.