Common Core · Grade 7
7.SP.A.2
Grade 7 — Use data from a random sample to draw inferences about a population, and gauge the variation in estimates from repeated samples.
Grade 7 — Use data from a random sample to draw inferences about a population with an unknown characteristic of interest.
The 2 skills that cover it
- Experimental ProbabilityEstimate a probability by running the experiment and counting, then use that estimate to predict what a longer run will do.Read the lesson →
- Samples & InferenceUse a sample to say something about a population you cannot count, and be honest about how much the answer could be out by.Read the lesson →
What a student should be able to do
- Compute a relative frequency from a table of trial results.
- Predict how often an outcome will occur in a longer run of trials.
- Compare an experimental probability with a theoretical one and say why they differ.
- Explain why more trials give a more trustworthy estimate.
- Estimate a population total from the proportion found in a random sample.
- Judge whether a sampling method is likely to be representative.
- Estimate a population size with the capture-recapture method.
- State a margin of error and the interval of plausible values around an estimate.