What Is the Scientific Consensus from Studying the Evidence of Iron-Working

question 41

Multiple Choice

What is the scientific consensus from studying the evidence of iron-working in Africa?

• A)It appears to have occurred at different times in northern and southern Africa.
• B)Iron-working in both areas appears to indicate that northern and southern Africa developed independently of each other.
• C)Iron-working techniques of both northern and southern Africa are very similar.
• D)Metal-working appeared in Egypt before anywhere else in Africa.
• E)Metal-working began in Sudan and moved north along trade routes.

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Definitions:

Interaction Effect

In statistics, the effect that an independent variable has on the outcome variable depends on or varies according to the levels of one or more other independent variables.

F-Ratio

A statistical value used to compare variances in ANOVA tests, determining if there are significant differences between group means.

Research Hypothesis

A proposed explanation or prediction about a relationship that can be tested through study and experimentation.

Null Hypothesis

A statistical hypothesis that assumes no significant difference exists in a particular condition or feature between two or more sets of data.