Maryland Math S.IC.B.7

S.IC.B.7 is a cluster heading. These are the individual standards under it.

• S.IC.B.7.a

  Conduct observational studies.

• S.IC.B.7.b

  Conduct statistical experiments.

01

What Students Need to Do

Students ask a question about a group, choose a sample, and collect data. They use the results to estimate an answer for the larger group and explain what might make that estimate inaccurate.

02

What Mastery Looks Like

A student can choose students at random from a roster, ask a clear survey question, and calculate a percentage from the responses. They can explain why another sample might give a different percentage.

03

Common Misconceptions

Students may survey friends and assume the results describe the whole school. They may treat a sample percentage as an exact fact or ask a question that pushes people toward one answer.

04

How to Assess It

Exit ticket: A school of 800 students wants to estimate how many ride the bus. Describe how to select 40 students, write the survey question, and name one reason the estimate could be off.

1. 01

   Have students put their preferred study spot on slips, draw 10 at random, and compare the sample counts with the class totals.

2. 02

   Ask students to write two sentences explaining whether a library survey could show where the whole school studies.

3. 03

   Give pairs three sample plans on cards: random student IDs, first 30 in the lunch line, and 30 volunteers; identify likely bias.

4. 04

   Plan a student council poll on lunch choices: name who to sample, write one neutral question, and decide how to report results.

• 7.DS.C.6

  Develop and use probability models to find probabilities of events and compare them to observed results.

• 2.DS.A.1.b

  Collect and organize data using surveys, making observations, or measuring.