AP Statistics Interpretations question n answers graded A+ 2023

AP Statistics Interpretationsdescribing and comparing distribution - correct answer center, shape, spread, context, compare (if necessary) z-score - correct answer the number of standard deviations above or below the mean correlation (r) - correct answer the strength and direction of a linear association between two quantitative variables coefficient of determination (r^2) - correct answer the fraction of variation in the y-values (in context) explained by the LSRL of y on x (in context) slope of LSRL (b) - correct answer as the x-variable increases by 1 unit, the y-variable is predicted to increase/decrease by an average of b y-units y-intercept of LSRL (a) - correct answer when x is 0 x-units, the y is predicted to be a y-units standard deviation of the residuals (s) - correct answer the average distance of each observed y-value from the LSRL (the average prediction error) standard deviation - correct answer the average distance of each observation from the mean expected value - correct answer if you were to repeat the random process many times, the mean number of ___________ (variable) would be about _______ (expected value) in the long run. probability - correct answer the long term relative frequency of an event (in context) occurring independent events - correct answer two events that have no effect on each other; P(A|B) = P(A), P(B|A) = P(B)