PSYC 300 WEEK 6 QUIZ | VERIFIED GUIDE

PSYC 300 WEEK 6 QUIZ Week 6 Part 1 of 1 - 40.0 Points Question 1 of 20 2.0 Points How are inferential statistics different from descriptive statistics? A.Descriptive statistics allow drawing inf ...

PSYC 300 WEEK 6 QUIZ Week 6 Part 1 of 1 - 40.0 Points Question 1 of 20 2.0 Points How are inferential statistics different from descriptive statistics? A.Descriptive statistics allow drawing inferences from the sample to a target population. B.Descriptive statistics verify the accuracy of the inferential statistics. C.Inferential statistics describe the results of a study. D.Inferential statistics allow drawing inferences from the sample to a target population. Question 2 of 20 2.0 Points _____ are characteristics of samples, while _____ are characteristics of populations. A.Concepts; statistics B.Parameteres; statistics C.Statistics; parameters D.Parameters; estimations Question 3 of 20 2.0 Points In a normal distribution, what percentage of scores falls between one standard deviation below the mean and one standard deviation above the mean? A.16% B.50% C.68% D.90% Question 4 of 20 2.0 Points Here is a set of scores: 5, 3, 7, 3, 6, 2, 5, 3. The median of this set of scores is ______. A.2 B.3 C.4 D.4.5 Question 5 of 20 2.0 Points Here is a set of scores: 5, 3, 7, 3, 6, 2, 5, 3. Those mode of this set of scores is _____. A.3 B.4 C.4.22 D.4.5 Question 6 of 20 2.0 Points An exam was given to two sections of the same course. In Section 1, the exam mean was 51 and the standard deviation was 7. In Section 2, the exam mean was 51 and the standard deviation was 13. Which of the following conclusions is accurate? A.Section 1 did better on the exam than Section 2. B.Section 1 scores were more variable than Section 2. C.Section 1 scores were less variable than Section 2. D.Section 1 did less well on the exam than Section 2. Question 7 of 20 2.0 Points The z score, or standard score, allows the researcher to determine: A.how far a target individual's score is from the group mean. B.what percentage of individuals in the sample scored above the target individual. C.the mean for the population based on the mean for the sample. D.what percentage of individuals in the sample scored below the target individual Question 8 of 20 2.0 Points Danzell is a purchasing agent for a major grocery store chain. He has noticed over the years that the higher the outdoor temperature, the more likely people are to buy fresh fruit. Based on Danzell's observations, we would say there is ____________ relationship between outdoor temperature and buying of fresh fruit. Correct A.a positive B.a negative C.a causal D.no Question 9 of 20 2.0 Points Frank Fitness found a correlation coefficient of -.74 between hours of strenuous exercise each week and a standard measure of body mass. He interprets this to mean that there is a ______ and ______ relationship between hours of strenuous exercise and body mass. A.strong; positive B.strong; negative C.weak; positive D.weak; negative Question 10 of 20 2.0 Points Statistical hypothesis testing involves the: A.research hypothesis. B.probability level. C.significance level. D.null hypothesis. Question 11 of 20 2.0 Points A placebo is given to the___________: A.experimental group B.treatment group C.control group D.both groups Question 12 of 20 2.0 Points We are intersted in the relationship between music and mood. We have a group of participants, we measure their mood, then, we have them listen to 20 minutes of sad country music, then, we measure their mood again. We have just conducted a (n)_____________: Incorrect A.static group comparison B.pretest-posttest control group design C.one-group pretest -postttest design D.within subjects design Question 13 of 20 2.0 Points Dr. Research is concerned that pretests may have an influence on posttest scores. To control this problem she conducts a (n)___________: A.alternating treatment design B.quasi-experimental design C.ex post facto design D.Solomon four group design Question 14 of 20 2.0 Points What is the key differnece between a posttest only control group design and a static group comparison? A.a posttest B.a pretest C.sample size D.random assignment Question 15 of 20 2.0 Points This kind of design is often confused with correlational and experimental designs because it involves looking at existing circumstances AND it has clear independent and dependent variables: A.nonrandomized two factor design B.multiple baseline design C.quasi experimental design D.ex post facto design Question 16 of 20 2.0 Points We are interested in violent video games and aggression in 10 year-old boys. We find dozens of experiments in the liturature about this topic and combine them all to determine whether they yeild consistant results. This procedure is called a(n)______________: A.multiple baseline design B.liturature review C.meta analysis D.liturature analysis Question 17 of 20 2.0 Points Measures of central tendency, the amount of variability within the data, and the extent that variables are related to each other are all elements in_______________: A.inferental statistics B.parametric statistics C.discrete statistics D.descriptive statistics Question 18 of 20 2.0 Points When two variables move down in value in relation to each other we call this a__________________: Incorrect A.negative correlation B.positive correlation C.partial correlation D.biserial correlation Question 19 of 20 2.0 Points Failing to reject the null hypothes and concluding that a result is due to chance when it is not is called a____________: A.type I error B.statistic error C.error variance D.type II error Question 20 of 20 2.0 Points Which of the following correlation coefficients is stronger? A.-.7 B.-.3 C.+.6 D.+.2