Box and Whisker Plots: Understanding and Creating Them

The video tutorial explains box and whisker plots, a visual tool for displaying data distribution using five key values: minimum, maximum, median, lower quartile, and upper quartile. It covers how to interpret these plots, create them using quiz scores, and analyze data through range and interquartile range. The tutorial concludes with practice questions to reinforce understanding.

What are the five key values used in a box and whisker plot?

• Minimum, maximum, average, lower quartile, upper quartile

• Minimum, maximum, median, lower quartile, upper quartile

• Minimum, maximum, median, lower quartile, range

• Minimum, maximum, mean, mode, range

In the example of quiz scores, what was the minimum score?

• 75

• 60

• 65

• 70

How is the median represented in a box and whisker plot?

• As a dot outside the box

• As the right edge of the box

• As the left edge of the box

• As a line inside the box

What does the lower quartile represent in a box and whisker plot?

• The highest 25% of data

• The average of all data

• The lowest 25% of data

• The middle 50% of data

What does it mean if the median is not in the center of the box?

• The data is evenly distributed

• The data is skewed

• The data is symmetrical

• The data has no outliers

What is the first step in creating a box and whisker plot from data?

• Identify the mode

• List data in numerical order

• Find the range

• Calculate the mean

What is the interquartile range (IQR)?

• The average of all data points

• The sum of the lower and upper quartiles

• The range of the middle 50% of the data

• The difference between the maximum and minimum values

How do you calculate the range of a data set?

• Add the minimum and maximum

• Subtract the minimum from the maximum

• Multiply the minimum and maximum

• Divide the maximum by the minimum

What percentage of students scored 60 or higher in the interactive example?

• 50%

• 60%

• 75%

• 90%

In the interactive section, what was the median score?

• 60

• 90

• 70

• 80