What is the sign of the product (−2)(4)(−6)(−3)?
positive, because the products (−2)(4) and (−6)(−3) are negative, and the product of two negative numbers is positive
positive, because the products (−2)(4) and (−6)(−3) are positive, and the product of two positive numbers is positive
negative, because the product (−2)(4) is positive and the product (−6)(−3) is negative, and the product of a positive number and a negative number is negative
negative, because the product (−2)(4) is negative and the product (−6)(−3) is positive, and the product of a negative number and a positive number is a negative number

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed