Deck 20: Appendix B: Behavioral Statistics

Question 1

When measure X gets larger, measure Y gets smaller in a(n) _____ correlation.

Answer 1

negative

Question 2

Ninety-nine percent of all the cases are found between _____ on a normal curve.
or
or

Answer 2

-3 and +3 SD -3 and +3 SD (standard deviation -3 and +3 standard deviation

Question 3

Professor Waters calculated the mean, median, and mode of the scores made on the midterm exam.These descriptive statistics are known as the measures of _____.

Answer 3

central tendency

Question 4

In order to convert a number to z-score, it is necessary to know the _____ and the standard deviation of a group of scores.

Question 5

A(n) _____ is used to graphically visualize a correlation.

Question 6

A bell-shaped distribution, with a large number of scores in the middle, tapering to very few extremely high and low scores is known as a(n) _____.

Question 7

A(n) _____ is a graph of a frequency distribution in which the number of scores falling in each class is represented by points on a line.

Question 8

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

Question 9

_____ statistics are used to summarize numerical data, while _____ statistics are used for decision-making and generalizing from small samples.

Question 10

The Jones have five children aged three, five, seven, 10 and 12.The median age of the Jones children is _____.
or

Question 11

A(n) _____ is the existence of a consistent, systematic relationship between two events, measures, or variables.

Question 12

The median is a measure of _____, while the range is a measure of _____.

Question 13

For the numbers 10, 17, 2, 9, and 15, the range is _____.
or

Question 14

A(n) _____ is made by breaking down the entire range of possible scores into classes of equal size and then recording the number of scores falling into each class.

Question 15

A bar graph of a frequency distribution is known as a(n) _____.

Question 16

Given these scores 22, 44, 33, 55, 33, 22, 44, 22, 55, 22, the mode is _____.
or
or

Question 17

If the mean of a test is 80 and the standard deviation is 10, a person with a z-score of -2.0 scored _____ on the test.
or

Question 18

Dr.Rodriquez discovers that the more education people have, the more money they tend to earn.Dr.Rodriquez has illustrated a(n) _____ correlation.

Question 19

The index of how much a typical score differs from the mean of a group of scores is known as the _____.

Question 20

After administering a unit test to her psychology students, a college professor calculates the menu and range for this test in order to better understand the performance of her students on the material in this unit.This professor is using _____ statistics.

Question 21

If a correlation is +1.00, a(n) _____ positive relationship exists.

Question 22

Tests of _____ provide an estimate of how often experimental results could have occurred by chance alone.

Question 23

Explain the difference in descriptive and inferential statistics.

Question 24

Describe the function of the measures of variability; and name and define two of these measures.

Question 25

Describe a frequency distribution, what it is used for, how it is constructed, and two ways that it can be shown graphically.

Question 26

Explain the purpose of tests of statistical significance, how the results of these tests are stated, and what is considered significant for most psychological experiments.

Question 27

What is the percent of variance, and how is it calculated?

Question 28

What is a z-score? Explain how it is calculated in the following example: Abby had a score of 75 on a test with a mean of 70 and a standard deviation of 5.What is her z-score?

Question 29

Juanita has determined that the correlation between her vocabulary screening test and her students' reading scores is .40.This means that _____ percent of the variation in reading scores is accounted for by knowing the students' scores on the screening test.
or

Question 30

You are a teacher.In one of your classes, the students achieved the following raw scores on a ten-question quiz: 10, 10, 9, 9, 9, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 2 2.Calculate each of the measures of central tendency for these scores.

Question 31

Three hundred students at Meridian Community College are surveyed regarding their views on the new cafeteria menus.All of the students at Meridian Community College would be considered the _____ in this study.

Question 32

Choosing a sample so that each member of the population has an equal chance of being included in the sample is called _____.

Question 33

A researcher studies the effect of a new therapy on a small group of hyperactive children in the hopes of generalizing these findings for use with all hyperactive children.This researcher is using _____ statistics.

Question 34

Correlations allow us to make _____, while experiments allow us to show _____.
or
or
or
or

Question 35

If you square the correlation coefficient, you will get a number telling the _____ accounted for by the correlation.

Question 36

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

Question 37

Explain what is meant by the statement, "Correlation does not demonstrate causation," and describe how causation can be established.

Question 38

The results of a test of significance are stated as a(n) _____.

Question 39

What is meant by the terms population and sample? Explain how a sample is chosen, and explain why it is chosen in this manner.

Question 40

The most commonly used correlation coefficient is called the _____.