SME
Grade 7 Math
Random sampling and population inferences
The main lesson, then each kind of problem it solves.
Random sampling and population inferences
Main lesson
Compare two samples
Use this for “Which class read longer last night, and by how much?”
Random sample or not?
Use this for “Which way of choosing students gives a random sample of the school?”
Sample means vary
Use this for “Many samples of 30 apples each give a mean weight. What does the spread of the means say?”