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Seventh Grade (Grade 7) Collecting and Interpreting Data Questions

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Grade 7 Collecting and Interpreting Data CCSS: 7.SP.A.1
Which of the ways of getting information listed below is an unbiased sampling method?
  1. Convenience sample
  2. Voluntary response sample
  3. Stratified random sample
  4. Self-selected sample
Grade 7 Collecting and Interpreting Data CCSS: 7.SP.A.2
A team of astronomers are trying to find out the number of red giant stars in a certain constellation. Which number of samples will give them the most accurate results?
  1. 4 samples from areas outside the constellation
  2. 4 samples from the areas with the most stars
  3. 4 samples from random parts of the constellation
  4. 4 samples from the areas with the least stars
Grade 7 Collecting and Interpreting Data CCSS: 7.SP.A.1
A team of researchers is trying to determine the amount of chemicals in a lake. Which of the samples below will produce the least accurate results?
  1. 3 water samples from the surface, and 1 from the lakebed
  2. 2 water samples from the surface, and 2 from the lakebed
  3. 4 water samples from the bottom of the lake
  4. 2 water samples from the east side, and 2 from the west
Grade 7 Collecting and Interpreting Data CCSS: 7.SP.A.1
A naturalist wants to discover what kind of rocks are found in a national park. Which of the following samples will give the most accurate representation of the kinds of rocks in the park?
  1. 75 rocks picked up off the surface of the ground
  2. 75 rocks dug up from under the surface
  3. 75 rocks from a underground cave
  4. 25 rocks from each of the three locations
Grade 7 Collecting and Interpreting Data CCSS: 7.SP.A.1
A college wants to find out what the students think of the courses it offers. Which of the samples below will result in the most accurate representation of the general student opinion?
  1. 60 students currently taking advanced medical courses
  2. 60 students currently in their last year of college
  3. 60 students selected using simple random sampling
  4. 60 students currently taking engineering courses
Grade 7 Collecting and Interpreting Data CCSS: 7.SP.A.1
In a survey about new bike paths, which group is least likely to be a biased sample?
  1. randomly chosen voters
  2. randomly chosen drivers
  3. randomly chosen bikers
  4. randomly chosen people exercising
Grade 7 Collecting and Interpreting Data CCSS: 7.SP.A.1
The cafeteria wants to add a new item to the menu. To decide which item to add, they surveyed every student in the school. Was it necessary to survey every student? Why or why not?
  1. No, because a random sampling would support accurate results.
  2. Yes, because every student might choose to buy lunch.
  3. No, because lots of students don't eat cafeteria food.
  4. Yes, because the cafeteria workers need the most accurate information.
Grade 7 Collecting and Interpreting Data
The follow is a method for determining the size of a population.
  1. Direct Observation
  2. Indirect Observation
  3. Sampling
  4. Mark and Recapture Studies
  5. All of the Above
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