210

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