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Ninth Grade (Grade 9) Statistics and Probability Concepts Questions

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Grade 9 Combinations and Permutations
The best definition for counting principle is
  1. the chance something will happen.
  2. the result of an experiment.
  3. the list of all outcomes.
  4. when you multiply choices to find the total number of outcomes.
Grade 9 Statistics and Probability Concepts CCSS: HSS-ID.A.1
Which of the following is typically not well suited for large sets of data?
  1. Histograms
  2. Dot Plots
  3. Box Plots
  4. They all work equally well for large sets of data.
Grade 9 Represent and Determine Probability
If you toss a coin 25 times, what is the sample size?
  1. 100
  2. 75
  3. 25
  4. 1
Grade 9 Range, Median, Mean, and Mode
Name the outliers of 14, 15, 15, 68, 20, 18, 22, 70, 16, 19, 22, 22.
  1. 22, 22, 22
  2. 68, 70
  3. 14, 15
  4. 0
Grade 9 Statistics and Probability Concepts CCSS: HSS-ID.A.1
Which of the following allows one to ALWAYS read/calculate the exact range of the data? There may be more than one correct answer.
  1. Histogram
  2. Dot Plot
  3. Box Plot
  4. None of the above.
Grade 9 Statistics and Probability Concepts CCSS: HSS-ID.A.1
Which of the following allows one to read/calculate the exact value of the mean? There may be more than one correct answer.
  1. Histogram
  2. Dot Plot
  3. Box Plot
  4. None of the above.
Grade 9 Line Plots CCSS: HSS-ID.A.1
Which of the following can be observed in a dot plot? Choose all the apply.
  1. Symmetry
  2. Clusters
  3. Gaps
  4. Outliers
Grade 9 Line Plots CCSS: HSS-ID.A.1
Which of the following statements is most true for a dot plot?
  1. They are typically used for showing the different percentiles of a data set.
  2. They can be used to easily read all measures of central tendency.
  3. They usually are best suited to small sets of data.
  4. They are a great way to summarize the data, without having to show every data point.
Grade 9 Represent and Determine Probability
Which of the following are independent events? There may be more than one correct answer.
  1. Rolling two dice.
  2. Picking three cards from a deck of cards, one at a time, keeping each one.
  3. Tossing a coin three times.
  4. Rolling one die, two times.
Grade 9 Histograms CCSS: HSS-ID.A.1
Which of the following is true about the bin width of a histogram? (The bin width is the size of the intervals that the data is divided into.)
  1. They are determined by the type of data.
  2. They are determined by a number of factors, including the number of data points.
  3. The larger the bin width, the better.
  4. The smaller the bin width, the better.
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