Exam 2: Statistics and the Research Process

A researcher investigates whether there is a relationship between participating in athletics and GPA by comparing GPAs from 20 randomly selected athletes with those from 20 randomly selected non-athletes.The variable measuring participation in athletics is a(n)

In the question,"for a given score on one variable,what scores occur on the other variable?" What is the "given" variable?

A researcher investigated whether a person's mood influences another person's mood.The researcher randomly divided the participants into three groups.Participants in the first group interacted with a happy person.Participants in the second group interacted with a sad person.Participants in the third group interacted with an emotionally neutral person.After the interaction,the researcher measured how happy the participants were.What are the conditions of the independent variable in this study?

A relationship can exist

Statistics are represented by _____,and parameters are represented by _____.

Greater vertical spread among the data points on a graph indicate

Which measurement scale has a true zero?

Suppose you randomly select 40 participants,measure the length of each one's index finger,and also administer an IQ test to each.This research is an example of a(n)

Which of the following statements is inferential?

The way a study is laid out is called its

In statistics a sample is

When a sample does not represent the population,any evidence obtained from that sample regarding a law of nature is

A number that describes a characteristic of a population of scores is called a

Suppose you randomly select 40 participants,measure the length of each one's index finger,and also administer an IQ test to each.In this,you are investigating whether

Lighting condition,if controlled by the researcher,would be considered a(n)