AP Statistics The Normal Distribution — practice questions
16 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice AP Statistics The Normal Distribution in the app →The standard normal distribution is a normal distribution of standardized values called:The empirical rule is also known as the:About what percentage of values lie within two standard deviations of the mean?About what percentage of values lie within three standard deviations of the mean?The total area under a normal probability curve must equal:Increasing the standard deviation of a normal distribution makes the curve:A z-score of plus 1 marks the value that is:Converting to the standard normal distribution lets you:Between one standard deviation and two, the extra share of values captured is about:The z-scores that bound the middle 99.7 percent of a normal distribution are:A normal distribution is often described by the shape of its curve as:Two normal curves with different standard deviations must still have equal:A z-score of zero corresponds to a value that is:If about 68 percent of values lie within one standard deviation, the share lying outside three deviations is rThe z-scores minus 2 and plus 2 correspond to which pair of original values in a distribution with mean 50 andRecognising the standard normal distribution matters because it can then be: