School Improvement in Maryland
Sample Item Scoring Information Return

Standard 5.0 Knowledge of Probability

Topic B. Theoretical Probability

Indicator 1. Determine the probability of an event comprised of no more than 2 independent events

Objective a. Express the probability of an event as a fraction, a decimal, or a percent

Selected Response (SR) Item

The outcomes for the sum of rolling two number cubes are shown below.

What is the probability of getting a sum of 9 when rolling two number cubes?


  1.  

  2.  

  3.  

Correct Answer
C.
 

Answer Annotation

  1. Answer A is almost correct
     
  2. This one is really far from being correct
     
  3. BINGO:
     
  4. Nope.
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