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Twelfth Grade (Grade 12) Statistics and Probability Concepts Questions

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Grade 12 Collecting and Interpreting Data
Level of measurement for weight in pounds (or kilos) would be
  1. nominal.
  2. ordinal.
  3. interval.
  4. ratio.
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
To identify the shape of univariate data, what type of graph would be the most useful?
  1. Ogive
  2. Histogram
  3. Scatterplot
  4. Pareto chart
  5. Pie chart
Grade 12 Statistics and Probability Concepts
A causal relationship is
  1. when both variables increase positively.
  2. when one variable causes a change in another variable.
  3. when two variables have an association between them.
  4. a shift between the two variables that changes the linear direction.
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
Ordinal level variables must be
  1. mutually exclusive.
  2. mutually exhaustive.
  3. mutually exclusive and mutually exhaustive.
  4. none of the above.
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.
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