Comparing Dot Plots

The dot plots compare the number of raffle tickets sold by boys and girls during a school fund-raiser. Which plot has an outlier? 

• Girls
• Boys
• Both Plots
• Neither

What is the difference between the medians for the two data sets? 

• 0 tickets
• 2 tickets
• 4 tickets
• 6 tickets

Find the medians.
Science: _________ Math: __________ 

•  science: 4.5 h; math: 3 h
•  science: 3 h; math: 4.5 h
•  science: 5 h; math: 5 h
•  science: 3.5 h; math: 4 h

Compare the centers and spreads. 

•  Math has a higher median (center) and a wider spread.
•  Math has a higher median (center) and a smaller spread.
• Math has a lower median (center) and a smaller spread.
• Math has a lower median (center) and a wider spread.

What is the range in gas mileage for cars?

• 2
• 3
• 4
• 6

The double dot plots show the average wait times in minutes for two popular rides at an amusement park. Compare the measures of center and variation, which ride typically has a longer wait time?

• No inference can be made from the graph.

• Topsy Turvy

• The wait times are the same for both rides.

• Rocket Blast

What is the difference between the medians for cars and SUVs?

• 0
• 5
• 7

What is an outlier?

• A data point that is significantly different from the other data points in a set, often lying far away from the rest of the values.

• A data point that is exactly the same as the mean of the dataset.

• A data point that is the median of the dataset.

• A data point that is the most frequently occurring value in the dataset.

What is the mode of a data set?

• The value that appears most frequently in a data set.

• The average of all values in a data set.

• The middle value when the data set is ordered.

• The highest value in a data set.

How do you calculate the mean of a data set?

• Add up all the data points and divide by the number of data points.

• Multiply all the data points together and divide by the number of data points.

• Subtract the smallest data point from the largest and divide by two.

• Take the median of the data points.