Marathon Completion Statistics

The video tutorial explains how to calculate the percentage of marathon runners who did not complete the race successfully. It details the process of adding the number of runners who gave up and those disqualified, converting this number into a fraction, and then into a percentage. The tutorial also covers rounding the result to the nearest tenth of a percent. Additionally, it explains how to find the percentage of runners who completed the marathon by subtracting the non-completion percentage from 100%.

How many runners started the marathon?

• 19

• 8

• 220

• 193

What is the total number of runners who did not successfully complete the marathon?

• 193

• 8

• 27

• 19

What is the significance of the number 27 in the context of the marathon?

• Total runners

• Runners who did not complete

• Runners disqualified

• Runners who completed

What is the first step in converting a fraction to a percentage?

• Round to the nearest tenth

• Multiply by 100

• Add a percent sign

• Divide to convert to a decimal

What percentage of runners did not complete the marathon successfully after rounding?

• 12.3%

• 12.0%

• 13.0%

• 11.7%

What is the final step in converting a decimal to a percentage?

• Add 100

• Subtract 100

• Multiply by 100 and add a percent sign

• Divide by 100

What is the purpose of rounding the percentage to the nearest tenth?

• To match the original data

• To increase accuracy

• To make it a whole number

• To simplify the number

How do you calculate the percentage of runners who completed the marathon successfully?

• Subtract 12.3% from 100%

• Add 12.3% to 100%

• Multiply 12.3% by 100%

• Divide 12.3% by 100%

What is the percentage of runners who successfully completed the marathon?

• 90.0%

• 88.0%

• 85.7%

• 87.7%

Why do the percentages of completion and non-completion add up to 100%?

• Because of rounding

• Because each runner either completed or did not complete

• Due to calculation error

• Because of estimation