MATH 225N WEEK 8 STATISTICS QUIZ EXAM
PREP 2026 PRACTICE SOLUTION STUDY GUIDE
◉ normal distribution. Answer: one clear peak in the center (a.k.a.
Bell Curve)
◉ skewed distribution. Answer: one clear peak on one side; has a
tail
◉ bimodal distribution. Answer: two clear peaks
◉ uniform distribution. Answer: no clear peaks; equally spread data
◉ mean. Answer: sum of all elements divided by the number of
elements
◉ median. Answer: middle value in data ordered from least to
greatest
◉ mode. Answer: value that occurs the most often in a data set
PREP 2026 PRACTICE SOLUTION STUDY GUIDE
◉ normal distribution. Answer: one clear peak in the center (a.k.a.
Bell Curve)
◉ skewed distribution. Answer: one clear peak on one side; has a
tail
◉ bimodal distribution. Answer: two clear peaks
◉ uniform distribution. Answer: no clear peaks; equally spread data
◉ mean. Answer: sum of all elements divided by the number of
elements
◉ median. Answer: middle value in data ordered from least to
greatest
◉ mode. Answer: value that occurs the most often in a data set
