A measure of the degree of relatedness between two variables
What is correlation
100
Observing how humans and animals behave in their own environment without interfering
What is naturalistic observation
100
having expectations about a behavior and then acting some way, usually unknowingly, to carry out the behavior
What is a self-fulfilling prophecy
100
a relatively small group out of the total population
What is a sample
100
a graph that shows frequency distribution by means of points and lines to connect the points.
What is a frequency polygon
200
This graph shows frequency distribution using rectangles
What is a histogram
200
sampling of data obtained through interviews and questionnaires
What is a survey
200
Name two ways in which researchers avoid a self-fulfilling prophecy
What are single-blind and double blind experiments
200
any factor that is capable of change
What is a variable
200
A number that describes something about the "average" score of a distribution
What is central tendency
300
A statistic that describes the direction and strength of the relationship between two sets of data
What is correlation coefficient
300
an intensive study of a person or group
What are case studies
300
a change in a participant's illness or behavior that results from a belief that the treatment will have an effect, rather than the actual treatment
What is the placebo effect
300
in this group participants are exposed to the independent variable
What is the experimental group
300
Name two commonly used measures of variance
What is range and standard deviation
400
Numerical methods used to determine whether data supports a hypothesis or the results are due to chance
What is inferential statistics
400
psychologists organize individuals into groups based on age. The group is surveyed, tested, and observed simultaneously.
What is a cross-sectional study
400
When neither the participant nor the experimenter knows which group of participants is the experimental one
What is a double-blind study
400
a graph of frequency distribution shaped like a symmetrical, bell-shaped curve. It shows normal distribution
What is a normal curve
400
subgroups in the population are represented proportionately in a sample
What is a stratified sample
500
A measure of variability that describes an average distance of every score from the mean
What is standard deviation
500
psychologists study the same group of people at regular intervals over a period of many years to determine if behaviors and or feelings have changed and if so how.
What are longitudinal studies
500
an experiment in which the participants are unaware of which participants received the treatment
What is a single-blind experiment
500
an arrangement of data that indicates how often a particular score or observation occurs
What is frequency distribution
500
The listing and summarizing of data in a practical way