10algebra 1 math a coal car on a train weighs 30 tons plus 1 ton per cubic yard of coal x that it carries. the total weight of a coal car is: f(x) = x + 30. how will the graph of this function change if the coal car weight is changed to 26 tons? a. the line will shift vertically up by 4 tons. b. the line will shift vertically up 26 tons. c. the line will shift vertically down by 4 tons. d. the line will shift vertically down by 26 tons.

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