1 if a data set has a distribution that is normal or approxi

1) if a data set has a distribution that is normal (or approximately normal), then to quantify how much data is within two standard deviations from the mean, it is best to use the Empirical Rule instead of Chebyshev’s Theorem. True or False?

2) When two data sets have different units of measurement, we should compare their respective standard deviations directly. True or False?

3) The letter is used to denote the mean of a population. True or False?

4) The median of a dataset can also be denoted as Q_3.  True or False?

Solution

1) true, empirical rule gives better probability rather than inequality given by chebyshev

2) false. standard deviation depends on unit of measurement

3) true

4) false, it should be Q2