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Statistics Ch.2 APSU Math 1530-
Complete Questions And Answers
Variance - correct-answer -measures how far a set of (random) numbers are
spread out from their average value.
Empirical Rule - correct-answer -states that for a normal distribution, nearly all of
the data will fall within three standard deviations of the mean.68% of data falls
within the first standard deviation from the mean. 95% fall within two standard
deviations.99% falls within 3 standard deviations of the mean.
Quartiles - correct-answer -each of four equal groups into which a population can
be divided according to the distribution of values of a particular variable.
Interquartile range (IQR) - correct-answer -measure of variability, based on
dividing a data set into quartiles.
Statistics Ch.2 APSU Math 1530-
Complete Questions And Answers
Variance - correct-answer -measures how far a set of (random) numbers are
spread out from their average value.
Empirical Rule - correct-answer -states that for a normal distribution, nearly all of
the data will fall within three standard deviations of the mean.68% of data falls
within the first standard deviation from the mean. 95% fall within two standard
deviations.99% falls within 3 standard deviations of the mean.
Quartiles - correct-answer -each of four equal groups into which a population can
be divided according to the distribution of values of a particular variable.
Interquartile range (IQR) - correct-answer -measure of variability, based on
dividing a data set into quartiles.
