Dot Plot and Statistical Questions

What do the dots above the 9 represent?

• 9 students

• 3 students

• 3 students ate breakfast

• 3 students ate breakfast in 9 minutes

Out of 40 students surveyed, what percent of students spend less than 5 minutes to eat breakfast?

• not enough information

• 45%

• 55%

• 57.5%

How good was the 2012 U.S. women’s soccer team? With players like Abby Wambach, Megan Rapinoe, and Carli Lloyd, the team put on an impressive showing en route to winning the gold medal at the 2012 Summer Olympics in London. Here are data on the number of goals scored by the team in games played in the 12 months prior to the 2012 Olympics.

1, 3, 1, 14, 13, 4, 3, 4, 2, 5, 2, 0,

4, 1, 3, 4, 3, 4, 2, 4, 3, 1, 2, 4, 2

Make a dotplot of these data.

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How good was the 2012 U.S. women’s soccer team? With players like Abby Wambach, Megan Rapinoe, and Carli Lloyd, the team put on an impressive showing en route to winning the gold medal at the 2012 Summer Olympics in London. The dotplot shows the difference in the number of goals scored in each game (U.S. women’s team – Opponent).

Explain what the dot above the -1 represents.

• One of the U.S. women's 2012 soccer games in which the U.S. team scored 1 fewer goal than the other team.

• One of the U.S. women's 2012 soccer games in which the U.S. team scored 1 more goal than the other team.

• One of the U.S. women's 2012 soccer games in which the U.S. team lost 1 fewer game than the other team.

• One of the U.S. women's 2012 soccer games in which the U.S. team won 1 more game than the other team.

How good was the 2012 U.S. women’s soccer team? With players like Abby Wambach, Megan Rapinoe, and Carli Lloyd, the team put on an impressive showing en route to winning the gold medal at the 2012 Summer Olympics in London. The dotplot shows the difference in the number of goals scored in each game (U.S. women’s team – Opponent).

What percent of its games did the 2012 U.S. women's team win?

• 21/25 = 0.84 or about 84% of the games

• 4/25 = 0.16 or about 16% of the games

• 25/21 = 1.19 or 1.19% of the games

• 25/4 = 6.25 or 6.25% of the games

A nutritionist made a dotplot of the calories per serving in adult cereals. What does the dot above the 80 represent in this dotplot?

• There were 80 cereals in the study

• One cereal that has 80 calories per serving

• 80 adults liked this cereal

A nutritionist made a dotplot of the calories per serving in 50 adult cereals. What percentage are over 140 calories?

• 3/50 or 6%

• 6/50 or 12%

• 3/140 or 2.1%

• 50/3 or 16.7%

What does each dot in the dotplot represent?

• One of the children in the study

• One of the students in the study

• One of the families in the study

There were 28 families in this study. What percent of the families have more than 4 children?

• 28/3 or 9.3% of families

• 5/28 or 17.9 %

• 3/28 or 10.7%

Who might be the individuals in this dotplot?

• cereals

• volcanos

• students

• grandparents