Practice Quiz Chapter 05

. All of the following are true regarding statistics except ________.

a) statistics are objective ways of interpreting observations

b) statistics help answer questions related to description, prediction, and association

c) the study design informs that type of statistics that are needed

d) research hypotheses play a minimal role in determining appropriate statistics

e) statistics can be used to explain differences in the data

. A symmetrical data distribution around a centre of scores best describes a ________.

a) kurtosis

b) positively skewed distribution

c) negatively skewed distribution

d) normal distribution

e) trimodal distribution

. The ________ is the most frequently occurring score.

a) mean

b) median

c) mode

d) standard deviation

e) variance

. Common measures of variability include all of the following except ________.

a) range

b) variance

c) standard deviation

d) interquartile range

e) ANOVA

. When data are measured at interval or ratio levels, the statistics are called ________.

a) percentage tests

b) non-parametric tests

c) parametric tests

d) standard deviations

e) boxplots

. A ________ is a statistical test is used when the study has two groups of different participants, and each participant contributes one score to the data.

a) paired t-test

b) independent t-test

c) ANCOVA

d) chi-square

e) correlation

. You are interested in comparing by sex, the academic averages of students who: take notes in class manually (group one), take notes in class with a computer (group two), and don't take notes at all (group 3). Thus, you choose to conduct a ________.

a) paired t-test

b) independent t-test

c) factorial ANOVA

d) repeated measures ANOVA

e) MANOVA

. You are watching the Olympics and curious about the relationship between skating speed and injury prevalence. The most appropriate statistical analysis to answer this question is ________.

a) correlation

b) ANOVA

c) A meta-analysis

d) a chi-square test

e) a post-hoc test

. All of the following are true regarding a meta-analysis except ________.

a) it integrates findings from several studies and quantifies them using an effect size

b) the PRISMA is used to report this type of research

c) a meta-analysis can be conducted without statistical analysis

d) a meta-analysis can be used for building evidence-based guidelines and theory testing

e) publication bias can be a weakness of meta-analysis

. All of the following are true regarding hypothesis testing except ________.

a) rejecting the H0 when the H0 is true = Type I error

b) rejecting the H1 when the H1 is true = Type I error

c) rejecting the H0 when the H0 is false = Correct outcome

d) accepting the H0 when the H0 is true = Correct outcome

e) accepting the H0 when the H0 is false = Type II error

. The horizontal axis of a histogram is also called the y-axis; the vertical axis of a histogram is also called the x-axis.

a) True

b) False

. In a normal distribution, the mean, median, and mode will be the same value.

a) True

b) False

. A larger standard deviation represents a greater spread of scores; a smaller standard deviation suggests the scores are more similar and closer together.

a) True

b) False

. The closer the correlation coefficient is to 1.0, the weaker the association between the variables.

a) True

b) False

. A p-value of .05 equates to there being 5% room for error or chance, which is equal to being 95% confident that the results are genuine and not due to chance.

a) True

b) False

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