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Twelfth Grade (Grade 12) Collecting and Interpreting Data Questions

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Grade 12 Collecting and Interpreting Data
On the same test, Mary and Pam scored at the 67th and 56th percentiles, respectively. Which of the following is a true statement?
  1. Mary scored 11 more points than Pam.
  2. Mary's score is 11% higher than Pam's.
  3. Eleven percent of those who took the test scored between Pam and Mary.
  4. Thirty-three people scored higher than both Mary and Pam.
  5. None of the above
Grade 12 Collecting and Interpreting Data
A simple random sample is defined by
  1. the method of selection
  2. how representative the sample is of the population
  3. whether or not a random number generator is used
  4. the assignment of different numbers associated with the outcomes of some chance situation
  5. examination of the outcome
Grade 12 Collecting and Interpreting Data
Grade 12 Collecting and Interpreting Data
Identify the situation where you would conduct a survey.
  1. Gallup wishes to determine the proportion of people who see themselves as "thriving."
  2. Stanford researchers want to determine the effect that improving student vision has on learning.
  3. A pharmaceutical company wants to advertise that its painkiller is more effective than aspirin, ibuprofen, and Tylenol.
  4. A gambler wishes to calculate the expected value of buying two lottery tickets.
  5. The U.S. Army wants to find the average cost of training a cadet.
Grade 12 Collecting and Interpreting Data
Which of the following is an example of quantitative data?
  1. fashionable colors by season of the year
  2. gender
  3. high school grade level - freshman, sophomore, junior, senior
  4. radiation level in millirems of food in Japan
  5. favorite sport
Grade 12 Collecting and Interpreting Data
Under what conditions would it be necessary to conduct an observational study?
  1. When there aren't any willing volunteers to participate in the study
  2. When the treatments aren't effective in a laboratory
  3. When the subjects can't be randomly selected
  4. When it is unethical to impose a treatment in order to measure a response on subjects
  5. When the research is not sufficiently funded
Grade 12 Collecting and Interpreting Data
Which of the following is an example of a quantitative variable?
  1. the color of an automobile
  2. a person’s state of residence
  3. a person’s zip code
  4. a person’s height, recorded in inches
  5. choices (c) and (d)
Grade 12 Collecting and Interpreting Data
Grade 12 Collecting and Interpreting Data
Ordinal level variables must be
  1. mutually exclusive
  2. mutually exhaustive
  3. mutually exclusive and mutually exhaustive
  4. none
Grade 12 Collecting and Interpreting Data
A bell-shaped curve that describes the distribution of data is a
  1. Bell curve
  2. Standard curve
  3. Normal curve
  4. Slanted curve
  5. Deviant curve
Grade 12 Collecting and Interpreting Data
Grade 12 Collecting and Interpreting Data CCSS: 6.SP.A.1
Which of the following is an example of systematic sampling?
  1. In a large school district, all teachers from two buildings are interviewed to determine whether they believe the students have less homework to do now than in previous years.
  2. Every seventh customer entering a shopping mall is asked to select his/her favorite store.
  3. Nursing supervisors are selected using random numbers in order to determine average annual salaries.
  4. Mail carriers of a large city are divided into four groups according to gender and according to whether they walk or ride on their routes. Then 10 are selected from each group and interviewed to determine whether they have been bitten by a dog in the last year.
Grade 12 Collecting and Interpreting Data
How would you change from cluster sampling to stratified sampling?
  1. Randomly choose subjects from the population
  2. Randomly choose subjects from each group
  3. Choose all the subjects from a group
  4. Do not make any changes
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