Professor Golder Is Studying Hyperactivity in Preschool Age Children

question 196

Multiple Choice

Professor Golder is studying hyperactivity in preschool age children.She is concerned that differences in child rearing,diet,and so forth may affect her results.To minimize these potential confounding variables,she should be sure to do which of the following?

• A)Use random assignment when forming her groups.
• B)Include an independent variable.
• C)Include a dependent variable.
• D)Assign boys to the experimental group and girls to the control group.

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Definitions:

Interval Data

Data with meaningful distances between measurements but no true zero point, allowing for operations such as addition and subtraction.

Ordinal Data

A type of categorical statistic that involves data classified into categories within a defined order but not necessarily with equal intervals between categories.

Nominal Data

Data that is categorized into distinct groups without any order or ranking between them, used for labeling or naming categories.

Ordinal Data

Data that can be categorized or ranked in order, but the intervals between ranks may not be equal.