Stem-and-leaf plots

Front

What is a stem-and-leaf plot?

Back

A stem-and-leaf plot is a method of displaying quantitative data in a graphical format, similar to a histogram, to retain the original data values while showing their distribution.

Front

What does the 'stem' represent in a stem-and-leaf plot?

Back

The 'stem' represents the leading digit(s) of the data values.

Front

What does the 'leaf' represent in a stem-and-leaf plot?

Back

The 'leaf' represents the trailing digit(s) of the data values.

Front

How do you find the mode in a set of data?

Back

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

Front

How do you find the median in a set of data?

Back

The median is the middle value when the data set is ordered from least to greatest. If there is an even number of values, the median is the average of the two middle values.

Front

What is the purpose of a stem-and-leaf plot?

Back

The purpose of a stem-and-leaf plot is to organize data to easily see its shape and distribution while preserving the original data values.

Front

How can you determine how many data points are in a stem-and-leaf plot?

Back

Count the total number of leaves in the plot; each leaf represents one data point.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set.

Front

What is an example of a stem-and-leaf plot?

Back

For the data set 32, 38, 40, 44, 46, 49, 53, 55, 58, 62, 65, 68, 70, 72, 81, a stem-and-leaf plot would look like: 3 | 2 8; 4 | 0 4 6 9; 5 | 3 5 8; 6 | 2 5 8; 7 | 0 2; 8 | 1.

Front

What is the significance of the mode in data analysis?

Back

The mode helps identify the most common value in a data set, which can be useful for understanding trends.