Lesson 26 — Activity 2:

Using Tables to Make Decisions


In this activity, you will look at using information from tables to make decisions about which route to take when travelling between your home and school or place of work on a regular basis.
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Elias drives to work every day. He wants to make a decision as to which route to take for his daily commute. His local newspaper printed the following information about the major roadways in his city. Only those that Elias can use for his daily drive are given here.

Elias did his own research by driving each route and measuring (with his trip odometer) each of the four routes:

To help Elias in his decision, look at the tables above to do some calculations:

1. How long will travelling each route take? Assume he travels the same speed on each route: 60 km/hr.

For the first question, you divide the distance by 60 to find out how long each route will take.

2. Convert these times into minutes. Multiply each time in hours by 60.

To find the time in minutes, you multiply the number you got in Question #1 (how long each route will take) by 60 to get the number of minutes the travel time will be for each route.

3. Find the total time required for an average trip. Add the travel time to the average time of delays.


To find the total time required for the average trip, you add the travel time in minutes to the average time of delays.

Questions

Use the tables below to answer the following questions.




Which is the safest route?

The route with the fewest accidents is Turtle Drive.

Which is the shortest route?

The shortest route is Turtle Drive.

Which is the fastest route?

The fastest route is 25th Street.


Which is the most dangerous route?

The route with the most accidents is Rabbit Rd.


Which route would you suggest Elias take?

There can be more than one right answer. If safety is the biggest concern, then Turtle drive is the best road for Elias. If speed is the biggest concern, then 25th Street is the best. If he does not like being tied up in traffic, then Long & Winding Way would be a better choice!


Self-check!

Try This!

Hockey Statistics

Use the information on a local hockey team to answer the following questions.


Players are awarded a "plus one" each time they are on the ice when their team scores a goal. They receive a "minus one" if they are on the ice when a goal is scored by the opposing team. The difference in these numbers is considered the player's "plus/minus score."

R. Teabolt scored 10 goals and allowed two goals to be scored against her while she was on the ice. The plus/minus score for R. Teabolt is 10 – 2 = +8.
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Let's try some questions!

Use the table above to answer the following questions. Write your answers on a piece of paper. When you are finished, check your answers by clicking on the tab below.

1. Calculate the plus/minus scores for the other three players (look only at the "goals" and "goals against" rows to calculator your answers).

2. From the table, which player has the most goals?

3. Which player has the least goals?

4. Of the four players, which one has the most assists?

5. Which one has the most points?

6. From your calculation, which player has the best plus/minus rating?