Skip to content

K–12 course Available practice SAT practice Sign in Admin

grade 12 · STAT2-002

Use a normal-distribution benchmark

Connect one, two, and three standard deviations with the empirical-rule proportions.

← Learning map

Learn together Try with a hint Show what I know

Try with a hintFresh problem · seed 508725385

For an approximately normal distribution, what percentage lies within 2 standard deviations of the mean?

Give me one hint

Use the 68-95-99.7 empirical rule.

Choose an answerabout 68%about 95%about 99.7%exactly 50%

It is always okay to go back to more help.

Math Lab is a working name for Ready Rung's separate math-learning product. Guided success and independent evidence are reported separately.