unit 1. statistical interferences study guide - standard deviation and margin of error are both a measure of…

unit 1. statistical interferences study guide - standard deviation and margin of error are both a measure of variance; they both indicate how spread out or dispersed a set of data is - standard deviation - 1 standard deviation - ______ of the distribution is covered - 2 standard deviations - ______ of the distribution is covered - 3 standard deviations - ______ of the distribution is covered - how do we calculate margin of error when given standard deviation? multiply standard deviation by a critical value (z - score)(t - score) and then divide by square root of the sample size (n) - what does it mean when our data set has a large margin of error? small margin of error? the results of a survey or study are less likely to accurately reflect the true population val - why do people running experiments sometimes run additional simulations? what information does it provide?

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