Exploring Quartiles and Boxplots

What is the median of a dataset also known as?

• Q1

• Q3

• None of the above

• Q2

How many quartiles are there in a dataset?

• 5

• 4

• 3

• 2

What is the first quartile also referred to as?

• Maximum value

• Upper quartile

• Lower quartile

• Median

In the given example, what is the value of Q2?

• 9

• 50

• 14

• 20

What does the third quartile represent in a dataset?

• The median

• The lower quartile

• The maximum value

• The upper quartile

What are the components of a five number summary?

• Minimum, Median, Q3, Q4, Maximum

• Minimum, Q1, Q2, Q3, Q4

• Q1, Q2, Q3, Q4, Maximum

• Minimum, Q1, Median, Q3, Maximum

What is the purpose of the whiskers in a boxplot?

• To represent the minimum and maximum values

• To show the range of the data

• To connect Q1 and Q3

• To indicate the median

How is the interquartile range (IQR) calculated?

• Q3 - Q1

• Q2 - Q1

• Maximum - Minimum

• Q3 - Q2

What indicates an outlier in the dataset?

• Values within Q1 and Q3

• Values beyond Q1 and Q3

• Values beyond 1.5 * IQR from Q1 and Q3

• Values within 1.5 * IQR from Q1 and Q3

In the example, which value was considered an outlier?

• 50

• 9

• 14

• 20