Swimmers' Performance Analysis

The video tutorial analyzes the performance of swimmers in the men's 100m backstroke at the 2012 Olympics. It compares the times of the top 8 finishers in the semifinal and final rounds using dot plots. The analysis reveals that, on average, swimmers had faster times in the finals, although not all individuals improved. The video also evaluates statements about the swimmers' performances, confirming that times varied more in the finals and that no swimmer was disqualified.

What event is being analyzed in the video?

• Men's 100 meter backstroke

• Men's 100 meter freestyle

• Women's 100 meter backstroke

• Men's 200 meter backstroke

What is the significance of the dot plot in the analysis?

• It indicates the weather conditions

• It illustrates the distribution of times

• It displays the swimmers' names

• It shows the number of events

How many swimmers finished in exactly 53.5 seconds in the semifinal?

• Five swimmers

• Three swimmers

• Two swimmers

• Four swimmers

In the final round, what was the fastest time recorded?

• 52.2 seconds

• 53.5 seconds

• 52.7 seconds

• 53.7 seconds

What is the intuitive mean time for the final round?

• 53.7 seconds

• 53.2 seconds

• 53.3 seconds

• 53.5 seconds

How does the mean time of the final round compare to the semifinal round?

• The final round mean is lower

• The semifinal round mean is lower

• Both rounds have the same mean

• The final round mean is higher

Was any swimmer disqualified from the finals?

• No, but one swimmer withdrew

• Yes, two swimmers were disqualified

• No, all swimmers competed in the finals

• Yes, one swimmer was disqualified

Do the times in the finals show more variation than in the semifinals?

• Variation is not discussed

• Yes, the finals show more variation

• No, the semifinals show more variation

• Both rounds have the same variation

Did all swimmers improve their times in the finals compared to the semifinals?

• No, all swimmers had slower times

• Yes, all swimmers improved

• No, some swimmers had slower times

• Yes, except one swimmer

Which statement is true about the swimmers' performance in the finals?

• The fastest time was slower than the semifinals

• The times varied more than in the semifinals

• The slowest time was faster than the semifinals

• All swimmers had the same time