This page practices samples, predictions and comparing populations (7.SP.1-4). Example: "Is this sample random or biased? A survey is done by picking 50 names at random from the whole school list."
Click on the image to open the Sampling and Inference Review PDF. Print it to use the worksheet. The answer key is on page 2.
Sampling and Inference Review
Use this free 7th grade math worksheet from Teaching Squared. Find more in Statistics and Probability Worksheets and 7th Grade Math Worksheets.