Question

each student in mr. joness class has two standard number cubes. each student records the number of rolls it takes until he or she rolls doubles. the results are shown on the dot plot. based on the results, what is the probability of needing exactly 6 rolls to get doubles?

Explanation:

Step1: Count total number of results

Count all dots: $2 + 1 + 2 + 3 + 5 + 4 + 1 + 0 + 2 = 20$

Step2: Count results for 6 rolls

Count dots at 6: $4$

Step3: Calculate probability

Divide favorable by total: $\frac{4}{20} = \frac{1}{5}$

Answer:

$\frac{1}{5}$ or $0.2$