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ITRIP QUESTIONS
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Preguntas del test (43)
1Data collected from a sample included a variable called gender which was coded with values of 0 for females and 1 for male. What scale of measurement is gender?
- ANominal
- BOrdinal
- CInterval
- DRatio
2The purpose of a theory may include all of the following except merely
- Anaming aspects of the phenomena.
- Bpresenting a system of testable relationships between concepts.
- Cpredicting phenomena.
- Dexplaining phenomena.
3Complex concepts:
- Acan be measured by a number of single indicators
- Bcan be measured by a single indicator.
- Ccan be measured by complex indicators.
- Dcannot be measured.
4We strive for a measure that is, at least, interval-scaled because:
- Ait provides more information.
- Bit is more precise.
- Cit is easier to analyse with available statistical methods.
- Dall of the above.
5A researcher has used the Rosenberg Self-Esteem Scale to measure a construct. She finds that scores from this scale:
- Correlate at .78 with Coopersmith Self-Esteem Inventory scores
- Produce a test-retest correlation coefficient of .82
- Correlates at .30 with the Spielberger State Anxiety Inventory
- Correlate at .02 with Novaco Anger Inventory scores- A.82
- B.78
- C.30
- D.02
6Which of the following is a systematic source of error that affects the reliability of a test that is administered pre and post treatment?
- Ausing one person to administer the pretest, and another to administer the posttest
- Badministering the test to a variety of people.
- Cadministering the test under a variety of situations (e.g., home, classroom).
- Dusing one person to administer the test on both occasions.
7Which one of the following is NOT a valid way of establishing the reliability of a test?
- Acorrelating the test score with another test that measures the same trait
- Bcorrelating the test score with that obtained two weeks earlier.
- Ccorrelating test scores of two alternative versions of the test.
- Dcorrelating scores derived from two halves of the test.
8If you were sent a questionnaire of 20 items that measures anxiety, you can reasonably assess its
- Acontent validity.
- Breliability.
- Cconstruct validity.
- Dconvergent validity.
9Heart rate and galvanic skin conductance are often used as physiological indices of anxiety, as are the Spielberge and Beck questionnaires as self-reports of anxiety. Which one of the following will correlate the highest?
- ASpielberger and Beck anxiety scores.
- BHeart-rate and galvanic skin conductance.
- CHeart-rate and Spielberger anxiety score.
- DGalvanic skin conductance and Beck anxiety score.
10In between‑group designs, the simplest way to make groups statistically equivalent is to:
- Arandomly assign treatments to groups
- Bpre-test participants in each group.
- Cstart with a larger sample and remove the extremes.
- Drandomly assign participants to groups
11Data collected in an experiment does NOT depend on:
- Athe research question
- Bthe reliability and validity of measures collected.
- Cthe situation under which measures were collected.
- Dthe kind of sample of participants.
12In a properly designed experiment, we strive to:
- AExclude rival explanations of the outcome.
- Bminimize the hypothesized effect.
- Cmaximise individual differences.
- Dinclude rival explanations of the outcome.
13Given that we need to evaluate the efficacy of a drug treatment, compared to a placebo control treatment, one disadvantage of using a between-groups design of two treatments is if:
- Atreatment duration is long (e.g., 20 weeks).
- Bthere is a carryover effect from one treatment to another.
- Cthere are irreversible changes arising from one of the treatment.
- Dthe expected sample size is small
14A within-subjects design is more advantageous than a between-subjects design is when the:
- Aeffects of treatment are irreversible.
- Bvariation between individuals on the dependent variable is large
- Cduration of treatment is long.
- Dpractice effect is substantial.
15High internal validity is a desirable feature of experimental design. Which one of the following does NOT affect the internal validity of an experiment?
- AUsing a representative sample of the population
- BSelection bias.
- CUsing a control group.
- DRandom assignment of participants to treatment groups.
16In a muscle building programme, 50 participants were randomly allocated into two equal-sized groups. One was assigned to a program that involved lifting light weights and the other to a program that involved lifting heavy weights. At the end of 20 weeks of training, 32 participants remained – 20 in the lightweight training program and 12 in the heavyweight training program. Results show that muscle development of the lightweight training group was significantly less than that of the heavyweight training group. A criticism of this experiment is that the findings may be due to...
- Aattrition
- Bselection bias.
- Chistory
- Dregression to the mean.
17The external validity of an experiment can be improved by:
- AUsing a heterogeneous sample of participants.
- BManipulating independent variable of interest.
- CHolding constant the impact of other independent variables.
- DBalancing the effects of other nuisance variables.
18Use of a control group, plus random assignment of participants to treatment, would allow us to avoid:
- Aattrition.
- Bselection bias
- Cexperimenter bias.
- Deffects arising from testing.
19Random selection of a sample of participants from a population is difficult and thus:
- Athe external validity of our findings.
- Bthe internal validity of our findings.
- Cthe reliability of our findings.
- Dthe validity of our findings.
20A researcher collects data on how many students are on scholarship at various universities in Melbourne. The researcher then makes a frequency table to summarize the data. The researcher is using:
- Ameasures of central tendency
- Bdescriptive statistics
- Cintuitive statistics
- Dinferential statistics
21A student theorizes that performance by students on the PSY1HPM statistics exam will be related to the number of hours they spend studying. She is going to test this theory with a sample of six students who are willing to disclose their time spent studying and their final marks. This student will be required to use __________ to test her theory.
- Acommon sense
- Breasoning by analogy
- Cinferential statistics
- Dintuition
22The two main branches of statistical methods are:
- Atheoretical and inferential
- Bintuitive and observational
- Cdescriptive and intuitive
- Ddescriptive and inferential
23The value of putting numbers into a frequency table is that:
- Ait makes the pattern of numbers clear at a glance
- Bit enables you to draw inferences about the population from the sample table
- Cfrequency tables are required by many journals
- Dall of above
24A psychologist is interested in studying aggressive tendencies in people and develops a measure of this personality characteristic. Aggression has become a(n) __________ in the psychologist's study.
- Aabstract concept
- Bvariable
- Cinvariable construct
- Dvalue
25Several employees of a major corporation are rated for their degree of job satisfaction. If a particular employee's job satisfaction is rated 8 on a 20-point scale, 8 represents that employee's:
- Afrequency
- Bvariable
- Cscore
- Dpercentile
26An intelligence test includes 15 items. Thus, a person could get any number correct between 0 and 15. Each of these numbers correct (0 to15) that a person could possibly get is called a:
- Avariable
- Bvalue
- Cmean
- Dfrequency
27The word Frequency in a frequency table refers to:
- Acycles per second
- Bthe number of scores at each value of a variable
- Cthe times per unit change of each score
- Dthe cumulative percentage for any given value
28In a histogram, the horizontal dimension displays a:
- Arange of possible values the variable can have
- Bpercentile score for each individual
- Cmean score
- Dfrequency
29In a histogram, the vertical (up and down) dimension displays:
- Apossible values the variable can have
- Bintensity of the variable
- Cfrequency
- Dmean score
30A histogram is most closely related to which of the following?
- ABar chart
- BPie chart
- CScatterplot
- DContour plot
31When working with a nominal variable, the histogram is called a(n):
- Abar graph
- Bfrequency polygon
- Carea plot
- Dbubble plot
32When making a histogram, it is easiest if you begin with a:
- Alist of all the scores in order
- Bfrequency table
- Clist all of the percentages in order
- Dnormal curve table
33The distribution of scores in a research study in the behavioral and social sciences is usually:
- Auni-modal
- Bbimodal
- Cmulti-modal
- Drectangular
34On an exam in a cognitive psychology class, most students attained a perfect score. This is an example of:
- Aa symmetrical distribution
- Ba bimodal distribution
- Ca ceiling effect
- Dfloor effect
35The two complementary approaches to discovering knowledge in the behavioural sciences by inferring population paramenters from sample statistics are
- Adeduction and induction
- Bhypothesis rejecting and hypothesis accepting
- Chypothesis testing and estimation using confidence intervals
- Dconfidence estimation and doubt estimation
36If you were looking at a graph of a normal distribution, which of the following would best describe it?
- ABimodal and roughly symmetrical
- BUnimodal, roughly symmetrical, and bell-shaped
- CSkewed to the right
- DRoughly symmetrical and W-shaped
37Relative frequency is:
- Athe expected number of times you will obtain a particular outcome in an experiment
- Bhow frequently a result occurs
- Cwhat result you expect if you repeat an experiment frequently
- Dthe number of times something occurs relative to the number of times it could have occurred
38You have an aquarium full of tropical saltwater fish and you need to know the exact salt content of the water. To test it, you take a cup and scoop some of the water out. In statistical language, the scoop of water is a:
- Apopulation
- Bsample
- Cpopulation distribution
- Dparameter
39A researcher conducts extensive interviews with 40 workers at a large factory in order to examine the morale among workers in general at that factory. In this example, what is the population?
- AThe 40 workers interviewed
- BAll workers in the factory except the 40 interviewed
- CAll the workers in the factory
- DAll the factory workers in Australia.
40You want to study the physical effects of caffeine. To recruit participants for your experiment you post a signup sheet for anyone willing to participate. This is an example of:
- Arandom selection
- Bhaphazard selection
- Cstratified selection
- Dtype B selection
41Whenever possible, researchers report the proportion of individuals approached for a study who actually participated. This is called:
- Aattrition
- Bresponse rate
- Crandom selection rate
- Dapproach rate
42The actual values of the mean, variance, and standard deviation of a population are called:
- Asample statistics
- Bpopulation parameters
- Cpopulation Z scores
- Dregressed standardized scores
43In statistics writing, it is common to use Greek letters for:
- Apopulation parameters
- Bhaphazard sampling
- Ccross-sectional studies
- Dquota sampling
Información
- Descripción
- Test sobre ITRIP QUESTIONS, creado por Katie Garth el 10/06/2017.
- Autor
- Katie Garth
- Idioma
- English
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- Historial
- Creado el 10 jun 2017 · actualizado el 10 jun 2017
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