Entry Quiz: Exploring Quartiles

Which of these is a measure of central tendency?

• Range

• Standard deviation

• Median

• Interquartile range

If you arrange data in ascending order, the middle value is called

• Mean

• Mode

• Median

• Range

How many equal parts does a quartile divide a dataset into?

• 2

• 3

• 4

• 5

Which quartile represents the median of a dataset?

• Q1

• Q2

• Q3

• Q4

The difference between the first quartile and third quartile is called:

• Interquartile range

• Range

• Median range

• Quartile deviation

For the dataset: 3, 7, 8, 9, 10, 12, 15 What is the median (Q2)?

• 8

• 9

• 10

• 12

What is the interquartile range (IQR)?

• 8

• 11

• 14

• 15

If Q1 = 12 and Q3 = 28, what is the interquartile range?

• 40

• Cannot be determined

• 20

• 16

The daily high temperatures (°C) for a week were: 22, 24, 25, 27, 28, 28, 30. What percentage of the days had temperatures below Q1?

• 50%

• 25%

• 75%

• Cannot be determined

Which of these statements aligns with our Statement of Inquiry: "Generalizing and representing relationships can help to clarify trends among individuals"?

• Quartiles divide data into equal groups, allowing us to see distribution patterns

• Quartiles allow us to compare individuals to the whole dataset

• Quartiles help us see patterns in individual data points

• All of the above