6th GradeStatistics and Probability60 target questions
Recognize that a measure of center for a numerical data set summarizes all of its values with a single number while a measure of variation describes how its values vary with a single number.
Sample Practice Questions (3)
1
Based on the box plot provided, what is the interquartile range (IQR) of the data set, and what does this value describe about the data?
A10; it describes the center of the data.
B20; it describes the center of the data.
C10; it describes the variation of the middle 50% of the data.
D25; it describes the total variation of the data.
The number line below shows a dot plot of the number of pets owned by students in a class. Each mark represents one student. Based on the diagram, what is the median number of pets, and is this a measure of center or variation?