Statistics Test with Correct Answers Rate A+

Test statistic/ result symbol - t Sample mean symbol - x-bar Sample standard deviation symbol - s Sample size symbol - n Hypothesis value (value from H0) symbol - mu What constitutes a low p-value? - less than 0.05 What is a one-sample t-test? - measure one quantitative variable in a single set of observation What is a paired samples t-test? - measure one quantitative variable in a combination of 2 highly related sets of observations What is a two-independent samples t-test? - measures one independent variable between two independent sets of observations Determine whether each describes a parameter or a statistic. After checking computer records for every commercial movie made last year, the longest running time is found to be 187 minutes. The number 187 is a ____________. - parameter Determine whether each describes a parameter or a statistic. A sample of students is selected and the average age is found to be 20.7 years. The number 20.7___________. - statistic Determine whether each describes a parameter or a statistic. 42 of the 50 US Governors own a computer, that is, 84%. The number 84% is a ____________. - statistic Determine whether each describes a parameter or a statistic. A value that we can calculate, is a ___________. - statistic Determine whether each describes a parameter or a statistic. A value that we usually cannot calculate and thus we wish to estimate, is a ___________. - parameter