Data Display Ticket Out the Door w/ Hints

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. Formula: Range = Max - Min.

Front

How do you find the median of a data set?

Back

To find the median, arrange the data in ascending order and cross off high-low pairs until you reach the middle value.

Front

What does it mean if 50% of people in a survey have a value less than or equal to a certain number?

Back

It means that number is the median of the data set.

Front

What is the interquartile range (IQR)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set. It measures the spread of the middle 50% of the data.

Front

How do you interpret box-and-whisker plots?

Back

Box-and-whisker plots show the distribution of data based on five summary statistics: minimum, first quartile (Q1), median, third quartile (Q3), and maximum.

Front

What is a box-and-whisker plot used for?

Back

It is used to display the distribution of a data set and to identify outliers.

Front

What does it mean if a box-and-whisker plot has a longer whisker on one side?

Back

A longer whisker indicates a greater spread of data on that side, suggesting more variability.

Front

How do you determine the median from a box-and-whisker plot?

Back

The median is represented by the line inside the box of the plot.

Front

What is the significance of the quartiles in a data set?

Back

Quartiles divide the data into four equal parts, helping to understand the distribution and spread.

Front

What does it mean if the IQR is small?

Back

A small IQR indicates that the middle 50% of the data points are close together, suggesting less variability.