Interpreting Dot Plots Effectively

This video tutorial explains how to interpret dot plots using a dataset of students' brushing times. It covers counting surveyed students, finding the median, calculating the range, identifying specific data points, determining the mode, and finding the longest and shortest brushing times. The tutorial provides step-by-step guidance on analyzing dot plots and understanding key statistical concepts.

How many students participated in the survey?

• 7 students

• 9 students

• 8 students

• 10 students

What is the median brushing time among the students?

• 3 minutes

• 3.5 minutes

• 3.75 minutes

• 4 minutes

What is the median value when two middle values are present?

• The lower value

• Sum of the two values

• The higher value

• Average of the two values

How is the range of brushing times calculated?

• Sum of all times

• Average of all times

• Maximum time plus minimum time

• Maximum time minus minimum time

What is the range of brushing times?

• 2.5 minutes

• 4 minutes

• 3 minutes

• 3.5 minutes

How many students brushed their teeth for more than three minutes?

• 6 students

• 5 students

• 7 students

• 4 students

How many students brushed their teeth exactly for four minutes?

• 3 students

• 5 students

• 2 students

• 4 students

What was the most common brushing time?

• 3 minutes

• 4.5 minutes

• 3.5 minutes

• 4 minutes

What was the longest brushing time recorded?

• 4.5 minutes

• 5 minutes

• 4 minutes

• 3.5 minutes

What was the shortest brushing time recorded?

• 1 minute

• 1.5 minutes

• 2 minutes

• 0.5 minutes