Select the true statement(s) about the measures of variability. Every measure of spread is non-negative. Quartiles divide the data into four parts. The first quartile is always less than or equal to the third quartile. The computational formula for the sample standard deviation is used only for large data sets. The sample standard deviation and the population standard deviation are always the same value. If the sample standard deviation is 0, then every value in the data set is the same