PSYCH 300 WEEK 7 QUIZ QUESTIONS AND ANSWERS

PSYCH 300 WEEK 7 QUIZ QUESTIONS AND ANSWERS refers to a set of techniques for summarizing and displaying data. A. A distribution B. A histogram C. An outlier D. Descriptive statistics An alternative to the mean is the ______. A. mode B. median C. tendency D. central tendency The _______ of a distribution is the extent to which the scores vary around their central tendency. A. range B. frequency C. standard deviation D. variability The location of a score within its distribution can be described using percentile ranks or _____. A. t scores B. central tendency C. standard deviation D. z scores It is also important to be able to describe the strength of a statistical relationship, which is often referred to as the ______. A. Cohen’s d B. standard deviation C. correlation D. effect size To compare two means, the most common null hypothesis test is the _______. A. Pearson’s r B. factorial ANOVA C. ANOVA D. t test A ______ is a statistic that is computed only to help find the p value A. t test B. one-sample t test C. critical value D. test statistic Statistical significance is not the same as _____ or ______. A. probability, sampling size B. relationship strength, importance C. probability, outliers D. null hypothesis, statistical relationship _____ testing is a formal approach to deciding whether a statistical relationship in a sample reflects a real relationship in the population or is just due to chance. A. Population B. Null hypothesis C. Sampling D. Hypothesis The corresponding values in the population are called ____. A. outliers B. errors C. sampling errors D. parameters