Bar and Pie Charts Are Graphical Techniques for Nominal Data

question 25

True/False

Bar and pie charts are graphical techniques for nominal data.The former focus the attention on the frequency of the occurrences of each category,and the later emphasizes the proportion of occurrences of each category.

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Definitions:

Internal Validity

Refers to how well an experiment is conducted and whether it measures what it's supposed to measure, without being confounded by other factors.

Independent Variable

A variable in an experiment that is manipulated to observe its effects on a dependent variable.

Internal Validity

The extent to which a study provides evidence that a causal relationship exists between the variables it examines, free from confounding factors.

Random Assignment

Use of a random "chance" procedure (such as a random number generator or coin toss) to determine the condition in which an individual will participate.