![]() ![]() ![]() Approximately, what percent of scores fall between the mean and -1 and -2 standard deviations under the normal curve? 14% What type of standard score has M = 0 and SD = 1? Z score If you want to calculate a z score for a test where your raw score was 24, what other information must you know? mean and standard deviation If you know the z score, standard deviation(s) and mean (M), what formula would you use to compute the raw score (X)? X=Z(s)+M Which of the following is true of z scores that fall below the mean they are negative Which of the following is true of z-scores that fall above the mean? they are positive These types of values are most likely to be seen: values very close to the mean What are true of z-scores which are equal to the mean? they are equal to zero What percent of all scores fall below a z score of +1? 84% What percent of all scores fall above a z score of +1? 16% In statistics, the most common standard is to have at least this level of confidence: 95% In a distribution with a mean of 100 and a standard deviation of 15, what is the probability that a score will be 115 or higher? 16% What type of standard score is computed by multiplying the z score by 10 and adding 50? T score What is the standard used by statisticians to determine the probability of an event occurring outside of chance alone? 5% If I flip a coin 10 times, how many possible combinations or outcomes could I have? 2(10) If a z score of 1.65 included 45% of the area under the normal curve from the mean, what percent remains above 1.65 on the X axis? 5% What is the z score for a raw score of 85 where the group mean is 75 and the standard deviation is 5? 2.0 If the null hypothesis claims that there is no difference between groups, it assumes the likelihood of this to be _%.
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