Mistake Master
Mistake Master · SAT Math · Unit 4 · Step-Through Animation
Both Labels, Then the Scale
You'll learnto read a two-way table by pinning both labels, the scale, and the right denominator.
Reading data means pinning down both labels and the scale, and letting the of-phrase name the base. Points leak in reading the wrong cell, using the wrong total as a denominator, and reporting a count when a fraction was asked.
rows · columns · scale
Before you start
What you're looking at
A two-way table of 200 students split by year and subject choice, beside a three-check plan card.
The question
Which value does a question actually ask for, and what whole does its fraction divide by?
Watch for
Watch how each cell needs both its row and its column, and how the of-phrase names the denominator.
What the symbols mean
The grid holds the counts, the edges hold the totals, and the card lists the three reads.
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