Grade 12 · SAT Math
Mean, median, and how to read a graph. Written in American English for students, parents, and teachers in the United States.
Open a card to see the answer. These are original practice items for US elementary students — not a state test copy.
Answer: average (sum divided by count)
Outliers pull the mean.
Answer: middle value in an ordered list
For an even count, average the two middle numbers.
Answer: most frequent value
A set can have more than one mode.
Answer: max − min
It is sensitive to outliers.
Answer: a biased sample for “all US teens”
Sampling must match the population you name.
Answer: automatically causation
A lurking variable may drive both.
Answer: how values fall into bins
Watch the bin width.
Answer: sits far from the other data
Investigate before dropping it.
Pick the next article in this topic — that is how a magazine issue is meant to be used.
