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Which of the following sampling techniques Involves choosing individuals from the population such as that individuals are chosen from a pre-existing group
Cluster sample
If we find that inferential test for an experiment is significant this means that
Condition means significantly differed Null should be rejected
Which of the following measures indicates the most common score in a distribution
Mode
Suppose that a researcher found that is introversion as measure on a standardize questionnaire of participants goes up number of social activities attended per week decreases the finding represents
Negative relationship
And inferential statistics we look for evidence against the
Null hypothesis
A —— hypothesis predicts no effect, whereas a ——- hypothesis predicts an effect
Null, alternative
And correlational research multiple measures are collected from —- groups of subjects to determine if those measures covary
One
A —- hypothesis predicts a directional effect, whereas a —— hypothesis predicts an effect in either direction.
One tailed; two tailed
Responses that require a coding scheme to be developed to categorize
Open ended
The decision to reject the null hypothesis test made is when
P=alpha P<alpha
Which of the following represents the correlational research design
Participants to take a handedness questionnaire with score indicating the degree of right and left handed nurse to look for a relationship between hand and a score and time to complete a cognitive task
The develop and validation of the survey is called
Psycho metrics
Volunteers are selected from students such that the proportion of students in age age range in the sample matches the proportion in the population
Quota sample
Individuals are selected at random from a list of phone numbers to be called for a survey
Simple random sample
Which of the following sampling techniques is likely to create the smallest amount of sampling error
Simple random sample
The ——- measure of variability indicates the average difference between the scores of a distribution in the mean of a distribution
Standard deviation
Individuals are selected at random for a study from a list of members of Girl Scout troops to represent the population of girls age from 8 to 13
Cluster sample
When ever a strong relationship exist between variables prediction of one variable from other variables—-
Is possible
Which of the following describes a quota sample
60% of population is left handed so 60% of population of participants chosen are left handed
Correlational studies are not well suited for answering research question
Causal
As a researcher we usually set alpha at .05 because
This sets our type 1 error rate at 5%
True or false all sampling error can be removed from a study is the appropriate sampling technique is used
False
True or false it is usually possible to test the entire population in a research study
False
The most common type of Convenience sample used by a psychologist is the — sample
Haphazard sample
Which one is not a probability sampe
Haphazard sample
Correlational studies show that man who had one servings of tomatoes the week or 60% less likely to get prostate cancer is it tomato causes the reduction in cancer rate is this correct interpretation of the finding
Incorrect
Students are selected at random from list of students at the University organized by class level such nap proportion of individuals at each class level and the population of students from matches the proportions selected for the sample
Stratified random smaple
A research study the P value obtained for the inferential statistics is .07 this means that
There is a 7% chance of obtaining these data when the null hypothesis is true.
When a variable that is not of interest in a study may explain the results of a study this is called
Third variable problem
A disadvantage of cluster sampling is that a portion of the population may be missed in the sample giving the researchers sample that is not fully representative of the population
True
The samples are similar to a stratified random samples without a random selection from subset of the population
True
True or false all studies regardless of sampling technique are subject to sampling error
True
True or false inconvenience samples of the probability of an individual being chosen from the population cannot be determined because individuals are not chosen randomly
True
Regardless of the type of observational technique used to measure behavior the goal of any correlational study is to examine relationships between ——or more measures of behavior
Two
If we reject the null hypothesis when it's really true we have made a
Type 1 error
If we retain the null hypothesis when it's really false we have made a
Type 2 error
Individuals are selected from a participant pool made up of students at the University who volunteered for the study
Volunteer/haphazard sample