Tablets, Abacuses, and Manual Tables

question 5

Multiple Choice

Tablets, abacuses, and manual tables

• A) are no longer used, because of the proliferation of calculators and computers.
• B) are examples of aids to manual calculating.
• C) were developed in Western Europe in the late Middle Ages.
• D) replaced Hindu-Arabic numerals as the preferred way to do calculations.
• E) All of the above.

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Definitions:

Bayesian Statistic

A statistical method that applies probability to statistical problems, incorporating prior knowledge as well as new evidence.

Independent Variable

A variable that an experimenter manipulates.

Control Variable

A variable that is kept constant during a scientific experiment to ensure that any changes in the outcome can be attributed to the variables being tested.

Confounding Variable

A variable that influences both the dependent variable and independent variable, causing a spurious association.