# 6th Grade - Estimate Probability Of Future Events

 Grade Level: 6th Skill: Probability Topic: Estimate Probability of Future Events Goal: Use data to estimate the probability of future events (e.g., batting averages or number of accidents per mile driven). Skill Description: Identify data and write it as a ratio (fraction). Use the ratio to write a proportion and use algebra to solve for the probability of future events. Understand that a proportion is two equal ratios. Use a variable to represent the missing data needed determine future probability. Solve for the variable using cross multiplication.

## Building Blocks/Prerequisites

### Sample Problems

 (1) If Stacy can copy 100 pages in 30 minutes. How many pages will she copy in 15 minutes? (2) Tom can type 50 words per minute. How many words could he type in two hours? (Remember, there are 60 minutes in an hour.) (6,000 words in two hours) (3) If Jason averages 2 hits out of 5 at bats and has a batting average of .400. Find the probability of how many hits he would get out of 26 at bats. (10.5 hits) (4) If Adriana averages 7 hits out of 20 at bats. Find the probability of how many at bats it would take her to get 22 hits. (about 63 hits) (5) The highway patrol averages 4 accident phone calls every two minutes. How many accident phone calls can they expect in an 8 hour shift? (960 calls)

### Online Resources

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