When finding the sum of 512 and –614, josh used a left-to-right algorithm to compute the answer. he first added the hundred’s digits 500 + (–600) = –100 he then added the ten’s digits 10 + (–10) = 0 lastly, he added the one’s digits 2 + (–4) = –2 his result was –100 + 0 + (–2) = –102 is josh’s answer correct? how else could josh have computed the sum?

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