A stem and leaf plot is a method of organizing numerical data based on the place value of the numbers. Each number is split into two parts: The first digit(s) form the stem. The last digit forms the leaf. The number of digits for the stem can vary, but the number of digits for the leaf should only ever contain a single digit.

A Stem and Leaf Plot is a special table where each data value is split into a "stem" (the first digit or digits) and a "leaf" (usually the last digit). Like in this example: "32" is split into "3" (stem) and "2" (leaf). More Examples: The "stem" values are listed down, and the "leaf" values go right (or left) from the stem values.

Stem and leaf diagrams present the data in an ordered list to make it clearer to read, and easier to work out the highest and lowest values in the dataset. There must always be a key. The key...

2023年9月19日 · Generate an online stem and leaf plot, or stemplot, and calculate basic descriptive statistics for a sample data set with 4 or more values and up to 2500 values, positive and negative. Enter values separated by commas such as 31, 26, 20, 28, 13, 10, 18, 13.

The second method is known as an ordered stem and leaf diagram. The scores are presented in order, so it is easier to analyse the data. We can see straight away that the highest score was 81 and we can quickly count the “6 | row” to see that ten students achieved a score in the 60s.

All of the values in a stem-and-leaf plot are arranged in ascending order (from lowest to highest). For this reason, it is often called an ordered stem-and-leaf plot. The data values 10, 13, 16, 21, 26, 27, 28, 35, 35, 36, 41, 41, 45, 46, 49, 50, 53, 56, …

In a stem and leaf diagram we write an ordered list of numbers with the digits of number split up. Usually we split the tens (which become the stems) and the ones (which become the leaves). Here are the times, in seconds, it took 15 students to complete a task.

Question 1: Draw ordered stem and leaf diagrams for the following sets of data. Remember to include a suitable key. Question 2: The stem and leaf diagram below shows the ages of a group of people. (a) How many people are there in the group? (b) How old is the youngest member of the group? (c) How old is the oldest member of the group?

Draw a new “ordered” stem and leaf diagram. It is very important here that the gaps between the leaves are equal, otherwise the diagram will be deceptive. Write a key so that people using the diagram can see clearly what it refers to and in particular what the stems mean.

(a) Draw an ordered stem and leaf diagram to show this information. You must include a key. (Total for Question 10 is 6 marks) (b) Work out the median score (2) (3) Another student sits the test and scores 80. Boris says: “This means the median will increase.” (c) Is Boris correct? You must explain your answer. (1)