The two properties about a set of measurements of a dependent variable that we are most interested in describing are: The ________________ is the sum of all the scores divided by the number of scores. The generally preferred measure of central tendency is usually the Which of the following is the most useful descriptive statistic for measuring dispersion? The standard deviation is If the mean I.Q. is 100 and the standard deviation of I.Q. scores is 15, then an I.Q. of 130 will have a z score (or standard score) of Inferential statistics allow you to decide whether a difference between the experimental and the control group is due to _______________ or ________________. The null hypothesis suggests that the two samples come from ___________ distribution(s), and the experimental hypothesis suggests that the two samples come from _____________ distribution(s). The power of a statistical test refers to its ability to Simple analysis of variance is used in designs having The number of participants in a study is denoted by A ____
_________ is a complete set of measurements. _____________ is one way of ensuring that a sample is representative of the population. If we conduct an experiment on average young, white, college males, inferential statistics allow us to generalize to the population of If we apply an alpha level of .05, and there really is no effect of the experimental manipulation, then one should make a Type I error Which of the following would be considered the most conservative alpha level? The prediction that alcohol slows reaction time is Two-tailed tests are _______________ conservative and ______________ powerful than one-tailed tests. The _____________ indicates the number of scores that are free to vary. The ____________ is used to analyze the results when there are more than two groups. The __________ maintains that two conditions do not differ. A conservative statistical test is one that What are inferential statistics used for? Descriptive statistics are used to: Which of the following is not a characteristic of the normal curve: