Exam 1: The Nature of Probability and Statistics

Give the boundaries of the given value. 7)49

If a researcher manipulates one of the variables and tries to determine how the manipulation influences other variables, the researcher is conducting a(n)

The amount of time needed to run the Boston marathon is an example of which type of variable?

When running an experimental study, the group that is manipulated can be called the treatment group.

Quantitative data can be further classified as continuous or nonsequential.

Which of the following correctly describes the relationship between a sample and a population?

The _______________ level of measurement classifies data into categories that can be ranked; however, precise differences between the ranks do not exist.

One advantage of a(n) ______________ study is that it occurs in a natural setting without intervention by the researcher.

Variables with values that are determined by chance are called _____________.

A ____________ is a characteristic or attribute of a subject that can assume different values?

What level of measurement classifies data into mutually exclusive categories in which no order or ranking can be imposed on the data?

Which of the following best defines the relationship between confounding, dependent, and independent variables?

______________ is a decision-making process for evaluating claims about a population, based on information obtained from samples.

In an advertisement for a car, a driver is shown driving expertly through a difficult road course. At the bottom of the ad, the following is included in small print "Professional driver on a closed course". Which of the following choices best describes this misuse of data?

In a true experimental study, the subjects should be assigned to groups randomly. If this is not possible and a researcher uses intact groups, they are performing a _______________.

Inferential statistics is based on probability.

Rating a restaurant by a number of stars is an example of an ordinal level of measurement.

______________ sampling is used when the population is large and it includes subjects residing over a large geographic area.

An advertisement for a car states that it is 25% more powerful. This is an example of _________________.

In the following chart, Height is the independent variable and Age of Tree is the dependent variable.