Exam 81: Understanding Descriptive and Inferential Statistics for Psychological Research

A correlation of +1.00 or -1.00 means that 100 percent of the variation in the Y measure is accounted for by knowing the X measure.

The mean,median,and mode are

Of the 4,000 students at Meridian Community College,250 were randomly selected to be surveyed regarding their views on the on-line learning classes.The students who were randomly selected and surveyed would constitute the

The existence of a consistent,systematic relationship between two events,measures,or variables is called a(n) __________.

Carol is drawing a graph of a frequency distribution in which she places the number of scores falling in each class as points on a line.Carol is graphing a

Which of the following is defined as the degree to which an event is unlikely to have occurred by chance alone?

A very important aspect of representative samples is that their members are

Which of the following is NOT a reason that the normal curve is a useful tool in psychological statistics?

Cara is plotting a zero correlation as a graph.Her cluster of points will form the shape of a(n)

If one calculates a correlation of -1.15,this coefficient of correlation indicates a strong negative relationship.

Which of the following consists of techniques for presenting numbers pictorially,often by plotting them on a histogram or frequency polygon?

Graphical statistics,measures of central tendency,and measures of variability are the three basic types of __________statistics.

If two variables have a correlation of -1.00,then

A mathematical relationship in which increases in one measure are matched by decreases in the other is a

Regarding z-scores,which of the following statements is FALSE?

The results of a significance test are stated as a

There are 10 students in the pre-kindergarten class.Each student is shown eight colors and asked to name them.The number of colors correctly named by each student is: 8,8,8,8,7,7,6,6,5,4.What would be the range?

On a graph,the horizontal line or the X axis is called the

The relationship between young children's height and weight would represent a

Which of the following is obtained for a group of scores by finding the difference of each score from the mean,squaring each difference,finding the average of this total,and lastly,taking the square root of this average?