Exam 2: Reading and Evaluating Scientific Research

As the average daily temperature in Des Moines,Iowa,decreases the number of persons who are observed wearing sweaters in the workplace increases.This is an example of a(n)________ correlation.

A histogram is created that presents data on the number of mistakes participants in a research study made on a memory test.The vertical axis indicates:

When assessing patients' personalities using an "ink blot" test that she created,Dr.Hardcastle is gaining confidence in the test's reliability.Which of the following is likely to be happening?

The _____ always marks the 50th percentile of the distribution.

What is the purpose of an institutional review board?

What does the height of the bars on a histogram indicate?

In a survey of recent graduates,your college reports that the mean salaries of the former students are positively skewed.What are the consequences of choosing the mean rather than the median or the mode in this case?

Collecting objective data without interference in the subject's normal environment is associated with ________.

Mr.Jones,a sixth grade science teacher,has tried to predict his students' end-of-the-year grades by looking at their grades from the previous year.Unfortunately,there does not seem to be any systematic relationship between these two variables.The correlation between these two variables is probably ____________.

As part of an assignment,Ricks' class was asked to complete an anonymous questionnaire on female sexual harassment.Which research method was Bill's professor using?

__________ is consistency of measurement.

Experimenter bias can best be controlled using ________.

__________ is the extent to which a measure assesses what it claims to measure.

A subset of cases selected from a larger population is a __________.

The process of setting up two or more groups in an experiment is called _____.

Under which of the following circumstances would the mean be the best measure of central tendency to use?

Any property of an organism,event,or something else that can take on different values is called _____.

Which of the following is an example of demand characteristics affecting an experiment?

In an experiment,a researcher wants to avoid the presence of _______________.

What is the main difference between an experiment and a correlational study?