SAT Math L15: Inference from sample statistics and margin of error

lilijia Post in SAT math，
06 April 2026
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Dear Students,

It’s so nice to work with you~ Today we reviewed problems in DSAT#8 and learned Inference from sample statistics and margin of error. Here are the notes for your review. 


Key concepts:

1. random sampling

2. the larger the sample size, the smaller the margin of error

Please finish the assignments on Test Innovators, and fill out the Question Form to share your problems with me. We will learn L16: Percentages and take a “pop quiz” next week.


See you on soon～

Best,

Ms. Li

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