Exam 81: Understanding Descriptive and Inferential Statistics for Psychological Research

A researcher studies the effects of a new therapy on a small group of depressed individuals in the hopes of generalizing these findings for use with all depressed people.This researcher is using _______ statistics.

Describe a normal curve,and explain the relationship of the standard deviation to this curve.

According to the text,many behavioral variables,such as intelligence and memory ability,

Regarding tests of statistical significance,which of the following statements is FALSE?

Three hundred students at Meridian Community College are surveyed regarding their views on the new cafeteria menus.In this study,all 4,000 students at Meridian Community College would be considered the _______.

The relationship of the standard deviation to the normal curve makes it possible to compare groups of scores if they come from distributions that are approximately normal.

Regarding the normal curve,which of the following statements is FALSE?

Juanita has determined the relationship between her vocabulary screening test and her students' reading scores to be .60.The percent of variance in reading scores that is accounted for by knowing the students' scores on the screening test would be _______ percent.

If higher environmental temperature is related to higher anger levels in people,then a positive relationship exists between the environmental temperature and people's anger levels.

Explain the purpose of inferential statistics and how samples and populations are utilized to fulfill this purpose;and explain how a sample is chosen,and why it is chosen in this manner.

A psychologist concludes his method would be effective for teaching math to all third graders on the basis of testing it on a selected group of third graders with a control group for comparison.He is making use of

The 45 students in your psychology section took the test.Your instructor adds together the scores made by these students and divides by 45 to obtain the

Which of the following measures offset proportions of a normal curve that are above and below the mean?

Five hundred students out of the 4,000 students at Meridian Community College are surveyed regarding their views on extracurricular activities available on campus.These 500 students would be considered the population in this survey.

When using correlation,we CANNOT

Which of the following is the simplest or most basic measure of variability?

If the points on a scatter diagram are clustered in a pattern that extends from lower left to upper right,this would suggest that the two variables depicted are

In your research study,you find that a small group of students who completed a computer tutorial on problem- solving skills scored significantly higher in their college algebra class than those who did not.Thus,the statistics that allow us to generalize these findings to other college algebra students are called _______ statistics.

Higher alcohol levels are related to lower coordination scores.This would be a

Regarding correlation coefficients,which of the following statements is FALSE?