Psychology Chapter 2
What is the median for the following distribution of numbers: 65 78 78 81 84 92 96 98
82.5
The mean of the date set listed 65 78 78 81 84 92 96 98 is__
84
What is the mode of the following distribution: 63 75 79 82 82 84 84 84 91 99 99?
84
Before conducting an experiment on people, psychologists today are required to submit their plan to a _____
Human subject committee
What is the mean of 47 20 20 14 18 24?
about 24
What is the independent variable of the following statement: melting time of ice vs. amount of sunlight exposure?
amount of sunlight
Another word for the mean is the ________of all the numbers.
average
The mean, median, mode are all measures of _______
central tendency
What is the dependent variable of the following statement: type of bleach on how clean your dirty clothes become?
cleanliness of clothes
The group who receives a placebo in an experiment or study is called the ______group
control
The relationship between two sets of data
correlations
In a _______study, a psychologist organizes individuals into groups based on age.
cross- sectional
In an experiment, a researchers'_____may produce nonrepresentative results. (cues, expectations, techniques, all of the above).
cues, expectations, techniques
The listing and summarizing of data in a practical way is called__________
descriptive statistics
When neither the participant, nor the experimenter, knows which group of participants is the experimental on, the experiment is known as a_______________________
double-blinded
Participants who are exposed to the independent variable are called the ________________group.
experimental
Arranging data so you know how often a score occurs is called the __________
frequency distrubtion
The variable that the experimenter manipulates is called the ______variable.
independent
In a _________study, psychologists study the same gorup of participants at regular intervals over a period of years.
longitudinal
The most commonly used measure of central tendency is the__________
mean
The number that is the average of all the numbers in a data set is called: finding the _________
mean
Locating the middle number in a set of data is called the ___
median
The most frequent score in a data set is called the ______
mode
Avoiding disruption of the participants is a cardinal rule for which research method.
natuarlistic observation
-.42 is an example of which type of correlation?
negative
What type of correlation is : "The more time you spend playing x box related to your GPA?"
negative
What type of correlation is: "Final grade in psychology class and days absent from class?"
negative
What type of correlations is: "Number of time spent practicing your tennis serve and amount of double faults a player has?"
negative
What type of correlations is: "Your grades and the amount of cheeseburgers that you consume?"
none
A symmetrical bell shaped curve is called a _______
normal curve
A _____ is some form of treatment that resembles medical therapy but has no medical effects.
placebo
A change in a participant that results from a belief that the treatment will have an effect.
placebo effect
The total group from which a sample is drawn is the _______
population
What type of correlation is: "Hours spent studying for a test and final grade on the test?"
positive
When the dependent variable increases, as the independent variable increases, the correlations is_____
positive
When the independent and dependent variable both increase, the correlations is______
positive
What type of correlation is: "The more time you brush your teeth related to teeth whiteness?"
positve
This type of sample has everyone having an equal chance of being represented.
random
If you subtract the lowest number in a data set from the highest score, and add one, you are determining the _______
range
The results of the Milgram experiment implies that individuals could easily inflict pain to other if such orders were issued by a ________
respected authority
A graph that demonstrates the direction of the relationship between two variables.
scatterplot
When researchers unwittingly bring about the situation they expected to find, they have created a_________
self-fulfilling prophecy
A measure of variability that describes distance of every score from the means of the scores is the_______
standard deviation
The branch of mathematics used to organize and evaluate a set of data is________
statistics
This type of sample has representatives of various subgroups of the population.
stratified
.97 is an example of which type of correlation?
strong positive
Sampling of data obtained through interviews or questionnaires is called______
survey
Using a ______psychologists obtain information by asking many individuals a fixed set of questions.
survey
A measure of a difference or spread is called the_____
variance
.02 is an example of which type of correlation?
weak postion
Hose does a naturalistic observation differ from a case study?
A naturalistic observation is when you watch the organism in its natural surroundings without them knowing. As case study is investigation on a participant with them knowing and participating in the study.
What is a self fulfilling prophecy? What is on way to avoid it?
When a researchers expectations about the results influences the participants behavior, and therefore, the results of the study. Single-blind and double-blind experiments
What is a negative correlation? Draw a graph showing a possible negative correlation between the amount of insulation in your house and the amount of natural gas used by your furnace.
When the independent is increasing and the dependent is decreasing or the other way around.
