Understanding Quartiles

What is the first step in finding quartiles?

• Find the mode

• Arrange the data in ascending order

• Subtract the highest and lowest value

• None of the above

If a dataset has 20 values, what is the position of the median (Q2)?

• 10th value

• 11th value

• 10.5th value

• 12th value

The third quartile (Q3) represents:

• The lowest 25% of the dataset

• The median of the dataset

• The highest 25% of the dataset

• The range of the dataset

Which of the following best describes quartiles?

• They divide data into four equal parts

• They measure the spread of data

• They only apply to large datasets

• They determine the mean

A researcher wants to analyze students' test scores using quartiles. What does Q2 represent?

• The mode of scores

• The median score

• The highest score

• The range of scores