Algebra B: Comparing Sets of Data

Front

What is the first quartile (Q1)?

Back

The first quartile (Q1) is the value that separates the lowest 25% of a data set from the rest.

Front

What is the third quartile (Q3)?

Back

The third quartile (Q3) is the value that separates the highest 25% of a data set from the rest.

Front

How do you find the median of a data set?

Back

To find the median, arrange the data in ascending order and locate the middle value. If there is an even number of values, average the two middle values.

Front

What is a five-number summary?

Back

A five-number summary consists of the minimum, first quartile (Q1), median, third quartile (Q3), and maximum of a data set.

Front

What does it mean if a city has a higher median?

Back

A higher median indicates that the central value of the data set for that city is greater than that of another city, suggesting higher overall values.

Front

How do you compare two sets of data?

Back

To compare two sets of data, analyze measures such as the mean, median, mode, range, and quartiles.

Front

What is the range of a data set?

Back

The range is the difference between the maximum and minimum values in a data set.

Front

What is the mode of a data set?

Back

The mode is the value that appears most frequently in a data set.

Front

How many values are in a five-number summary?

Back

There are five values in a five-number summary: minimum, Q1, median, Q3, and maximum.

Front

What does Q1 represent in a box plot?

Back

In a box plot, Q1 represents the lower edge of the box, indicating the first quartile.