Exam 19: Appendix A: Behavioral Statistics

If one calculates a correlation of -1.20,this coefficient indicates that a

The coefficient of correlation ranges from

In a memory test,the test of statistical significance used showed a probability of .025 that the group mean of the experimental group and the group mean of the control group would differ as much as they do by chance alone.This allows us to

A mathematical relationship in which increases in one measure are matched by increases in the other (and decreases correspond with decreases)is a

Measures of variability belong to which of the following?

A graph that plots the intersection of paired measures,that is,the points at which paired X and Y measures cross is called a

For a correlation of +1.00 or -1.00,what percent of the variation in the Y measure is accounted for by knowing the X measure?

Histograms and frequency polygons are visual representations of

Dr.Sandford indicates the frequencies of his data using vertical bars.Dr.Sandford is constructing a

The type of graph depicted below is a

Which of the following is NOT an example of a correlational study?

Representativeness as it refers to a sample means

Which type of statistics are used for decision-making,for generalizing from small samples,and for drawing conclusions?

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

A histogram can be described as a type of

In order to gain greater confidence that a cause-and-effect relationship exists,which of the following must be performed?

Gayle had a score of 80 in a class with a mean of 70 and a standard deviation of 5.Her z-score is

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?

When using tests of statistical significance,which of the following gives the odds that the observed difference was due to chance?

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.