Exam 1: Making Sense of Variability: an Introduction to Statistics

In an experiment, a research hypothesis is a.

When an observed difference between two groups on the dependent variable is attributed to the effect of the independent variable through statistical hypothesis testing, then we know that.

An experimenter created two different groups of participants and gave each group a different instructional program on the anatomy of the eye. After the instructional program each group was given a multiple choice test to assess their knowledge of the eye. In this experiment, the multiple choice test used to assess the participant's knowledge Was the variable.

A statistic is.

Which of the following best describes an experiment?

The term equivalent groups means that.

The correlation coefficient may range in value from.

The process of summarizing, analyzing, and reaching conclusions from numerical measurements uses methods.

A is any environmental condition or event, stimulus, personal characteristic or attribute, or behavior that can take on different values at different times.

A is used to predict one set of scores from a different set of scores.

A(n) is a subset, or subgroup, selected from a population.

A psychologist finds that performance on learning a poem decreases as room temperature increases above 72°F. In this instance, learning of the poem and room temperature.

A population is.

A(n) experiment uses two or more equivalent groups.

If two variables change consistently in relation to each other, they are said to.

A is a number indicating the relatedness of two sets of scores and the direction of the relationship.

A characteristic of a population is called a(n).

If a researcher used an experiment to assess whether or not a certain drug would increase reading comprehension scores, then the dependent variable would be the

A between-subjects experiment uses two or more groups.

was a 19th century professor who attempted to characterize the "average" man.