Distribution Math

The dotplot displays the last digit of 100 phone numbers chosen at random from a phone book. Describe the shape of the distribution. Describe the peak(s).

• There are peaks at 4 and 7.

• There is a peak at 7.

• There is a peak at 4.

• There are no peaks.

Who might be the individuals in this dotplot?

• cereals

• volcanos

• students

• grandparents

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.

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

The dotplots compare the number of hours a group of teenagers spent on two activities.

Select the answer that is NOT true.

• The data for exercise has a lower center than the data for video games.

• Both dotplots appear to be skewed right.

• Both dotplots appear to have outliers.

• The time spent on video games had a greater range than the time spent on exercise.

What is NOT true about the graph above?

• There is an outlier in the Cat Owners data.

• There is an outlier in the Dog Owners data.

• There is a peak of 7 in the Cat Owners data.

• There is a peak of 5 in the Dog Owners data.

Given above are marks obtained by 20 students in Math out of 25.

Find the value of x.

• 4

• 5

• 7

• 8

Which pet was chosen by 6 people?

• Cat

• Goldfish

• Hamster

• Snake

Sam's team has scored the following numbers of goals in recent games presented as raw data. 2, 3, 1, 2, 1, 3, 2, 3, 4, 5, 4, 2, 2, 3 What is the mode value of the score?

• 2

• 3

• 4

• 5